Saturday, February 14, 2015

Top 10 LDS Intellectuals (1969)

In 1969, four years after founding the Mormon History Association and three years before becoming Church Historian succeeding Howard W. Hunter, Leonard J. Arrington surveyed notables and compiled a list of the most influential LDS intellectuals in history. The top 10 on his list in order:
  1. B.H. Roberts
  2. Orson Pratt
  3. Joseph Smith, Jr.
  4. Sterling M. McMurrin
  5. James E. Talmage
  6. John A. Widtsoe
  7. Lowell L. Bennion
  8. Hugh W. Nibley
  9. Parley P. Pratt
  10. E.E. Ericksen
B.H, Roberts (1857-1933)
Brigham H, Roberts published New Witnesses for God: Vol II The Book of Mormon in 1903. That was followed by New Witnesses for God: Part III The Evidences of the Truth of the Book of Mormon in 1909. His polemical Studies of the Book of Mormon were not published until 1985. Roberts knew the text exceptionally well. He laid the foundation for modern Book of Mormon studies by asking probing questions. He read widely trying to shed light on Jaredite, Lehite and Mulekite culture and geography. Panama was his narrow neck of land.
Orson Pratt (1811-1881)
Orson Pratt's 1879 Salt Lake City edition of the Book of Mormon established the chapter and verse structure used in all subsequent LDS editions. He advocated a hemispheric geographic model with Panama as the narrow neck that was the predominant view in the Church for decades..
Joseph Smith, Jr. (1805-1844)
Joseph Smith, Jr. in his youth saw the Nephites and Lamanites in vision as related by Lucy Mack Smity in History of Joseph Smith by His Mother. He later recognized elements of their culture when he read a copy of John Lloyd Stephens' 1841 blockbuster Incidents of Travel in Central America, Chiapas and Yucatan and saw Frederick Catherwood's stunning illustrations. The Prophet and his close associates, John Taylor and Wilford Woodruff, participated in the enthusiasm for Book of Mormon correlations that swept through Nauvoo in the wake of Stephens' book.
James E. Talmage (1862-1933)
James E. Talmage was the central figure behind the 1920 Salt Lake edition of the text. In 1921, as a member of the Quorum of the Twelve, he convened a series of Book of Mormon geography hearings. The Panama-centric hemispheric model was still very much in vogue at that time, although a Mesoamerican setting was gaining traction following the significant RLDS 1917 publication by Louis E Hills (Geography of Mexico and Central America from 2234 BC to 421 AD) advocating the Usumacinta as the Sidon.
John A. Widtsoe (1872-1952)
John A. Widtsoe had a driving curiosity about the Nephite text. While President of the European Mission headquartered in London, he assigned one of his missionaries, Franklin S. Harris, Jr., to comb the British Museum collecting evidences for the Book of Mormon. The result was their joint 1935 publication Seven Claims of the Book of Mormon: A Collection of Evidences. Widtsoe championed the BYU Department of Archaeology, founded in 1946 with M. Wells Jakeman as chairman. He recruited Hugh W. Nibley to BYU.
Hugh W. Nibley (1910-2005)
Hugh W. Nibley is generally regarded as the father of modern Book of Mormon studies. His seminal 1952 publication Lehi in the Desert and the World of the Jaredites set a new standard for comparative studies and established a paradigm that many LDS ancient scripture scholars follow today. Nibley drove the first jeep ashore at Utah Beach on D-Day, all the while thinking about how utterly remarkable the Book of Mormon is.

Six of Arrington's top ten LDS intellectuals were significant Book of Mormon scholars in their day. In 1969 John W. Welch's groundbreaking article on Chiasmus in the Book of Mormon was published in BYU Studies just as he was heading off to Oxford. John L. Sorenson was still two years away from re-joining the BYU faculty after a stint in California in the private sector. If the top 10 list were compiled today there is a good chance Welch and Sorenson would be on it.

In my opinion, the most influential Book of Mormon scholars in our dispensation are:
  1. Joseph Smith, Jr.
  2. Hugh W. Nibley
  3. John W. Welch
  4. John L. Sorenson
  5. Royal Skousen
  6. Grant Hardy
  7. Noel B. Reynolds
  8. Terryl Givens

Friday, February 6, 2015

Geology of the Book of Mormon

Tyler Livingston, recently named President of Book of Mormon Archaeological Forum, introduced me to a new book a few days ago. I immediately purchased a copy, read it, and wrote a favorable review on Amazon. The book is entitled Geology of the Book of Mormon by Jerry D. Grover, Jr., PE, PG.
Important New Book
Grover is both a geologist and an engineer. 222 pages of lavishly illustrated text are followed by 122 bibliographic refererences, one of which is this blog, and a 3 page index. The real glory of the book are the 91 striking visuals, many from online sources. The cover features images of Popocatepetl, the most active volcano in Mexico, from the Mixtec Codex Vindobonensis C, aka Mexicanus I, and from the Toltec-Chicimec Codex Rios, aka Vaticanus A. The impressive cover photo is of a Chilean volcano that erupted in 2011. John L. Sorenson's son, Curtis, prepared the splendid maps in Mormon's Codex: An Ancient American Book (Salt Lake City: Deseret Book and Neal A. Maxwell Institute for Religious Scholarship, 2013). Grover worked with Curtis to enhance some of John's maps and figures 1 - 5, 82, 85, and 87 in Geology are either direct copies or adaptations of maps from Mormon's Codex.

Seasoned professionals reading the Book of Mormon in light of their expertise often find exciting insights. See the blog article BMAF 2014 for discoveries Wade Miller made when he engaged the text based on his experience as a geologist and paleontologist. Miller's Science and the Book of Mormon (Laguna Niguel: KCT & Associates, 2010) explores fauna in pre-columbian Mesoamerica. See the blog article "The Legal Cases in the Book of Mormon" for another book I highly recommend. It contains insights Jack Welch gleaned through decades of experience in Biblical Law. The Book of Mormon has material enough for specialists in dozens of disciplines to study it in depth.

Ben L. Olsen worked in Mexico, Guatemala and Belize as a petroleum geologist for Shell Oil Co. After taking a Book of Mormon tour with Joe Allen, Olsen wrote a small piece entitled "Some Thoughts Regarding Geology and the Book of Mormon." Russell H. Ball published "An Hypothesis Concerning the Three Days of Darkness among the Nephites" in Journal of Book of Mormon Studies 2:1, 1993. Bart J. Kowallis wrote an article entitled "In the Thirty and Fourth Year: A Geologist's View of the Great Destruction in 3 Nephi" that appeared in BYU Studies 37:3, 1997. In 55 pages he summarizes evidence from Papua, New Guinean oral traditions, an Egyptian stela ca. 1,500 B.C., and modern earth sciences to explain 3 Nephi 8-10 as an explosive volcanic eruption similar to Tambora (1815 Volcanic Explosivity Index - 7) or Krakatoa (1883 VEI - 6). That prompted Benjamin R. Jordan to write the short article "Many Great and Notable Cities were Sunk: Liquefaction in the Book of Mormon" that appeared in BYU Studies 38:3, 1999 where he describes a natural phenomenon with supersaturated soils that can sink coastal cities even without a tsunami.

None of these previous geological overviews approaches the depth or scope of Grover's work. Geology of the Book of Mormon attempts not only to explain the natural disasters the Nephites described but also to help identify Book of Mormon cities based on the location of Mesoamerican tectonic plates, volcanoes, fault lines and hurricane tracks.

This image from NASA's Goddard Space Flight Center shows the major tectonic plate boundaries that heavily influence volcanic and seismic activity on the planet.
Global Plate Tectonic Boundaries
The Book of Mormon area in Mesoamerica has a triple junction of the North American, Caribbean and Cocos Plates. This makes the geology of the area diverse and complex.
North American, Caribbean and Cocos Plates Junction
In Mexico and Guatemala the North American and Caribbean Plate boundary is known as the Cuilco- Chixoy-Polochic Fault, part of the Polochic Motagua Fault System. Uplift along this fault has created an east-west line of steep mountains we correlate with the narrow strip of wilderness in Alma 22:27. See the blog article "The Narrow Strip of Wilderness."

Geologic maps of the Isthmus of Tehuantepec area utilize many abbreviations and some specialized vocabulary:
  • AC Altos Cuchumatanes Fault
  • BVF  Baja Verapaz Fault
  • CAFS Central American Forearc Sliver
  • CAVA Central American Volcanic Arc
  • CFTB Chiapas Fold and Thrust Belt
  • CH Chicomuselo Fault
  • CM Chiapas Massif
  • CR Colima Rift
  • ECV El Chichon Volcano
  • GCA Grabens of Central America
  • Graben Depressed block of land bordered by parallel faults
  • JAL BL Jalisco Block
  • JChFZ Jocotan - Chamelecon Fault Zone
  • Lahar Flow of pyrochastic material in slurry with debris and water
  • LCF La Ceiba Fault
  • LTVF Los Tuxtlas Volcanic Field
  • Maar Broad, low volcanic crater often filled with water
  • MAT Middle America Trench
  • MCVA Modern Chiapanecan Volcanic Arc (contains El Chichon Volcano) 
  • MFZ Motgaua Fault Zone
  • PFZ Polochic Fault Zone
  • PMFS Polochic Motagua Fault System
  • R Reverse Faults
  • RFP Reverse Fault Province
  • SMB Southern Mexico Block
  • SS Strike Slip Faults
  • SSFP Strike Slip Fault Province
  • TCFS Tula-Chapala Fault System
  • TMVB Trans Mexican Volcanic Belt
  • TR Tepic Rift
  • VB Veracruz Basin
  • VF Veracruz Fault
  • VF in Guatemala Volcanic Front (contains Agua, Pacaya, Tecuamburro, Muyuta Volcanoes)
This map shows fault lines in Guatemala and Mexico south of the Isthmus of Tehuantepec.
Fault Lines in Southern Mesoamerica
Another view of major fault lines in Guatemala as extensions of the deep water Cayman Trough.
Fault Lines along the North American & Caribbean Plate Boundary
Maya and Chortis are blocks within the North American and Caribbean plates respectively.

This illustration of major fault zones north and south of the Isthmus of Tehuantepec is from a 2008 article by Louis Andreani and 6 other authors entitled "The Neogene Veracruz fault: evidences for left-lateral slip along the southern Mexico block."

Major Mesoamerican Faults
Grover includes this map as Figure 9 in Geology of the Book of Mormon. Note that The Yucatan Peninsula is much more geologically stable than the rest of Mesoamerica.

Volcanic arcs or fields and fault systems are generally found together, This map of volcanoes is from the Smithsonian Institution's Global Volcanism Project. For its modest size (108,890 square kilometers) Guatemala has one of the densest concentrations of volcanoes (24) on the planet.
Mesoamerican Volcanoes as Red Triangles
These volcanoes are all known to have erupted during the Holocene (last 10,000 years). The Smithsonian currently lists 1,565 Holocene volcanoes in its database.

Earthquakes obviously follow fault systems. This is a map of earthquakes detected by Mexico's SSN Servicio Sismologico Nacional during the year 2011.
2011 Earthquakes Documented by Mexico's SSN 
SSN measured 4,168 seismic events in 2011, most of them very small tremors. In that year, 96% of the earthquakes occurred in only 5 regions of the country: Baja California and its gulf aka the Sea of Cortez, the Pacific coast, Guerrero, Oaxaca and Chiapas.

This is a similar map for 2012. Again in that year, 96% of the earthquakes were in Baja, the Pacific, Guerrero, Oaxaca and Chiapas.
2012 Earthquakes Documented by Mexico's SSN
In the maps above triangles represent seismograph locations. Clearly, earthquakes are common in certain parts of the country, rare in others.

This is a USGS Hazard Map of Mesoamerica. Areas in white experience virtually no seismicity. In dark brown areas earthquakes are routine.
Probability of Seismic Events
 As this map makes explicit, earthquake frequency decreases with distance from a tectonic plate boundary.

This chart puts seismic and volcanic events in some perspective.
Earthquake Moment Magnitudes & Energy Release
The upper range of energy released from known terrestrial geologic events in historic times is on the order of 10 - 50 trillion kilograms (10 - 50 thousand megatons) of TNT equivalent. The largest terrestrial geologic event known was the Oligocene eruption of La Garita Caldera in SW Colorado. Its estimated energy release was on the order of 250 thousand megatons of TNT equivalent. These earthbound events pale in comparison with the estimated energy released by celestial impacts, widely believed to have caused mass planetary extinctions. The Cretaceous-Paleogene impact that formed Chicxulub Crater in northern Yucatan, for example, probably released energy on the order of 100 million megatons (100 teratons) of TNT equivalent. In other words, La Garita was 5X larger than anything mankind has experienced in historic times. Chicxulub was 400X larger than La Garita. It would be interesting to estimate the size of the energy release implied by the events described in the 3 Nephi destruction text.
  
Jerry Grover uses John L. Sorenson's geographic model of the Book of Mormon throughout his book since Sorenson enjoys broad academic acknowledgement. Terryl Givens, for example, in his foreword to Mormon's Codex: An Ancient American Book, says "So influential has Sorenson's work on Book of Mormon geography been that there is widespread consensus among believing scholars in support of what is now called the 'Sorenson model,' which identifies the scripture's setting with a Mesoamerican locale." Givens is correct in his assessment of Sorenson's Mesoamerican correlation. Every discipline has a mainstream and mainstream scholars who take Book of Mormon studies seriously are nearly unanimous in support of Mesoamerica as the Book of Mormon homeland. When it comes to specifics within Mesoamerica there is far less consensus. The Sorenson model, first synthesized in 1953-55, has been widely available in print since 1985. Larry Poulsen's work branches from Sorenson. The Hauck model was published in 1988. Joe Andersen follows Hauck and Bob Roylance branches from him. The Allen model was published in 1989 and revised in 2008. BMAF began holding annual Book of Mormon Lands Conferences in 2003. Aric Turner's excellent work based on RLDS (now Community of Christ and Restoration Branch) scholarship first appeared in 2004. The Norman model, first synthesized in 1965-66, has been widely available in print since 2006. The model in this blog began to take shape in 2011. It is an amalgam of Sorenson, Norman, Hauck and Allen with a handful of original correlations from myself (Kirk Magleby). Turner corroborates much of it. The lack of consensus among Book of Mormon Mesoamericanists provides the fertile intellectual vacuum in which the Heartland movement thrives. Grover views himself as providing another realm of inquiry that can inform the Mesoamerican discussion and for that he deserves a great deal of credit.

One note about consensus. On October 18, 2014 I gave a presentation at BMAF 2014 entitled "Book of Mormon Trifecta." It was in response to Jack Welch's request that I come up with a methodology that could successfully evaluate any proposed Book of Mormon geographic correlation. On the evening of October 18th, Joe Andersen proposed to the assembled BMAF board that a working group convene a seminar with the express intent of achieving consensus among believing Mesoamericanists. Joe's proposal was accepted. The meeting Neal Rappleye and I had with Jack Welch in his office on December 19, 2014 (see the blog articles "The Legal Cases in the Book of Mormon" and "Sermon at the Temple") was part of the process. The tests I have been elaborating since October, 2013 (see the blog article "Test #11 The Big Picture") are part of the process. At least three more tests should soon be added to the list. At a BMAF board meeting held on January 31, 2014 I reported on progress toward realization of Andersen's proposal. At that meeting Tyler Livingston was named President of the organization succeeding Doug Christensen who succeeded the late Steve Carr. I was named VP - Special Projects. There is only one special project on my agenda - building Andersen's proposed consensus. Stay tuned.

Grover begins in chapter 1 with a recitation of scriptural passages that either prophesy about or describe the destruction in 3 Nephi 8-10. He is careful to use Royal Skousen's Yale edition (see the blog article "Scribal Error"). His chapter 2 depicts the Sorenson model with maps provided by John's son, Curtis. Chapter 3 is an excellent introduction to the geology of the Isthmus of Tehuantepec region with special emphasis on the Veracruz Fault, San Martin Volcano in the Tuxtlas and El Chichon Volcano in Chiapas. Eruptions of San Martin (1793) and El Chichon (1982) in historic times are well-documented. Discussions of the Volcanic Explosivity Index VEI metric and eruptions of certain volcanoes within confirmed date ranges begin to set the stage for serious comparisons with events described in the Nephite annals. Chapter 4 describes many ways volcanoes, earthquakes and hurricanes destroy life and property. Discussion of the Mercalli intensity scale focused on the effects of a seismic event adds another empirical tool scholars can use to evaluate the Nephite text in light of modern earth sciences. One of Grover's most valuable contributions is his summary of the Nephite destruction texts organized by geologic hazard. In chapter 5 Grover presents a preliminary timeline for the 3 Nephi destruction drawing on the work of Book of Mormon chronologists Randall Spackman and Jeffrey Chadwick. In chapter 6 Grover assesses the viability of Kowallis' 1997 proposal that a single large volcanic explosion with its associated earthquakes and ocean wave action could account for the destruction in 3 Nephi. Grover calls this the "volcano-only scenario." Marshalling data from dozens of USGS shakemaps, detailing differences between volcanic and non-volcanic earthquakes, and examining textual and lexical references, the author discounts this scenario. His lexical resources are Websters 1828 and Websters 2013.

Grover's chapter 7 about storms and tempests is inconclusive. His single page chapter 8 highlights the tenuous nature of the data in our area of interest. Could a unitary explosive volcanic event such as San Martin 1793 blanket "most or all of the land northward and land southward" with enough ashfall to account for the 3 Nephi three days of darkness? Figures 29 on page 39 and 35 on page 46 suggest not. Historical experience indicates 1 millimeter of tephra falling on a given point does not darken the sun for 72 hours. Since "it is difficult to pinpoint historical eruptions into a given century, let alone a 3-hour period on a particular day" correlations with the Book of Mormon text will necessarily be tentative. Single page chapter 9 strengthens Grover's thesis that 3 Nephi describes a concurrent seismic + volcanic event. In chapter 10 the author makes his case for a simultaneous earthquake along the Veracruz fault and explosive eruption of San Martin Volcano. Chapter 11 fine tunes the Sorenson model with some of the author's own geographic insights. For example, since Sorenson's Jerusalem in the south of Lake Atitlan doesn't fit the Veracruz Fault/San Martin Volcano scenario very well, Grover posits a possible second city named Jerusalem in the land northward. Some linguistic derivations suggested by Brian Stubbs are fascinating. Stubbs, who has spent his career becoming one of the world's leading scholars of Uto-Aztecan, has a great deal to offer the Book of Mormon community. I hope we hear much more from him in coming years. Chapter 12 brings the geological data and Sorenson's model together and - no surprises here - they fit like a hand in a glove. Chapter 13 shows Grover at his creative best, interpreting half a dozen Nephite and Jaredite events in a geological & biological light. In chapter 14 the author spends some time with V. Garth Norman's map and concludes it does not fit his preferred geological scenarios as well as the Sorenson model. He also casts doubt on the Ammonihah/El Hormiguero II correlation I propose in the blog article "Ammonihah." See below for reasons I believe Grover's objections are unfounded. Chapter 15 summarizes what the author thinks he has accomplished in his useful and in some ways groundbreaking new book. He has made a solid contribution to Book of Mormon studies and earned my respect. I appreciate any work that helps me better understand Nephite scripture. Geology of the Book of Mormon by Jerry D. Grover opened my eyes to a number of exciting things in the text I had not previously considered. I recommend this book to serious students.

Where Grover interprets the text correctly, I find his analyses enlightening. But, the old adage "when you have a hammer, everything looks like a nail" applies in this case. I believe he has forced some readings in support of his thesis that result in illogical conclusions. Specifically,
  • The "plains" referenced in 1 Nephi 12:4 are probably not referring uniquely to the Tabascan coastal plain bordering the Bay of Campeche.
  • The verb "shewing" in 3 Nephi 11:1 (the Yale edition replaces "show" with "shew") refers to verbal communication, not visual observation.
  • Alma2's and Amulek's escape from prison in Ammonihah Alma 14:26-29 resulted from a localized event, not a major strike-slip fault boom-generating earthquake measuring at least VIII on the Mercalli intensity scale.
Plains. Both Nephi in his small plates and Mormon in his abridgement are meticulous to document prophesy fulfilled. As he discusses the scribal task of engraving on plates, Nephi bears witness that God's words will all be fulfilled 1 Nephi 9:6. Lehi's prophecy in 1 Nephi 1:13 was explicitly fulfilled and Nephite record keepers half a world away made sure we understand God kept His promise 2 Nephi 1:4, Jacob  2:32Helaman 8:20-21. This emphasis on prophesy-become-history leads to many parallel texts throughout the Book of Mormon such as 2 Nephi 25:24 fulfilled by 3 Nephi 9:17 and the spectacular example of 3 Nephi 18:37 where a dutiful son made good on his late father's promise post holocaust Moroni 2:3. This prophecy/fulfillment duality is evident in 1 Nephi 12:4 fulfilled by 3 Nephi 8:12-14. This means "the plains of the earth" that were broken up in Nephi's vision and the "many smooth places" that became rough in the 3 Nephi destruction text are paired elements. There were multiple plains and they were clearly associated with the land northward.
There is even a larger prophetic narrative at work. The level and smooth becoming broken and rough is associated with the first advent of the Savior Moses 7:56, Matthew 27:51, 1 Nephi 19:12. At the second coming, the reverse happens and rough places will become smooth Isaiah 40:4. The New International Version of the Bible NIV renders this verse "the rough ground shall become level, and the rugged places a plain." Luke 3:5 repeats Isaiah. In his inspired translation of the Bible, the Prophet Joseph made it clear this passage refers to the second coming JST Luke 3:4-11D&C 49:23 and D&C 109:74 continue the theme. Nephi shows that ca. 600 B.C. he was aware of the geologic events associated with both advents 1 Nephi 17:46.

The Book of Mormon mentions several discrete plains.
  • An area between the cities of Bountiful and Mulek (less than 1 day's march distant according to the battle narrative in Alma 52) along the east coast of the land southward Alma 52:20
  • An area adjacent to the city of Nephihah which was between Aaron and Moroni in the Nephite SE Alma 62:18-19
  • Plains of Heshlon near the Valley of Gilgal in the land northward Ether 13:29-29
  • Plains of Agosh in the land northward Ether 14:15-16
It is very unlikely 1 Nephi 12:4 is referring exclusively to the Tabascan coastal plain when it uses the term "plains of the earth."

Shewing. We now know the language that fell from the lips of the Prophet Joseph at the moment of translation was Early Modern English. See the blog article "Early Modern English."  This makes our indispensable lexical resource the incomparable Oxford English Dictionary OED. The Yale edition of the text uses some form of the verb "show" 8 times. It has 156 instances of the older "shew." The OED has 2 very different senses of meaning for shew:
  • look at, gaze upon, behold or view
  • point out, explain or expound through verbal or written statements or arguments
The Book of Mormon uses "shew" with both senses of meaning. Spiritual communications from a divine source predominate. Mere mortals are rarely the agents doing the shewing and even when they are, except in one case, an element of divinity is present. Most of the instances of the word are the Lord shewing visions, truths, His power or Himself in the case of the Brother of Jared and the Nephites assembled at the Temple in land Bountiful. And even the Lord often speaks words in His powerful spiritual communications 1 Nephi 20:3, Prophets shew signs to unbelievers via verbal expression Helaman 9:25-26. Sometimes the object being shewn is the Book of Mormon itself or selections of its words Title Page, 2 Nephi 27:15, Alma 37:14. In the Book of Mormon, the Lord 1 Nephi 1:15 and the Holy Ghost 1 Nephi 11:9 show visions. The Lord shows truths via words spoken by angels 2 Nephi 6:9. "Shew" in the text is usually part of a revelatory process. Prophets in their role as authors make editorial promises to shew truths in future writings 1 Nephi 1:20, Mosiah 23:23, Alma 57:8. The 3 Nephites invested with divine power can shew themselves 3 Nephi 2:30. The only secular instance in the text of a mortal shewing other mortals something visually is Almahelping the Lamanites and Amulonites find their way back to Nephi Mosiah 23:36-37, and even then Alma1's explication may have been verbal or via a map. Other times mortals shew repentance or good works as part of their spiritual progression Alma 7:15. The Book of Mormon terms for inter-personal visual communication are "behold" Jacob 5:16, Mosiah 18:8, Alma 11:22 as 3 Nephi 11:7-8 makes explicit or "look" Helaman 5:37.

In the passage at issue, 3 Nephi 11:1, almost one full year had passed since the great destruction described in 3 Nephi 8. Approximately 2,500 people 3 Nephi 17:25 gathered at the temple were marveling, wondering and shewing things of interest among themselves. And what was their medium of communication? Human speech as 3 Nephi 11:2-3 makes explicit. What was the great and marvelous change that was their topic of conversation? Localized topographies, demographics and the nature of their society. The wicked had perished leaving only the righteous 3 Nephi 10:12 who were now free to explain and expound recent history in light of their prophetic texts 2 Nephi 10:14-17 without persecution. One of the primary matters they were discussing one to another was the Savior and his imminent visit 3 Nephi 11:2.

Ammonihah Sesimic Event. I have personally experienced several earthquakes including the 1974 Lima earthquake that killed 79 people. It registered 8.1 on the Moment Magnitude Scale with maximum Mercalli Intensity of IX.I have spoken with many people who have been in large earthquakes. This is the common pattern of animal and human behavior we have seen:
  • Dogs whine in a peculiar way, acting as an early warning system. Many people are already out in the streets before the ground begins to move because they recognize the sound dogs make just before a sizable earthquake.
  • When the ground and structures begin to shake, people run for the doors yelling and screaming. In Spanish style homes with large enclosed courtyards, they often gather in the garden. Most people run out into the streets. Catholics often engage in panic rituals.
  • When the quaking stops, people linger for awhile expecting aftershocks. 
  • After they are convinced the earthquake has passed, almost everyone goes back inside to check for damage. This can take several minutes. Families try to account for all their members. There are lots of phone calls or quick visits across town to check on relatives and friends.
  • After they are satisfied they know the extent of the damage to their loved ones and property, people then begin to visit their neighbors to check on them and swap stories. Intense interaction with neighbors on all sides ensues. People listen for radio or TV reports.
  • If there has been damage, the slow process of healing and rebuilding begins almost immediately.
I have not personally heard an earthquake boom, but I have spoken with people who have. They describe it as a sound like thunder or artillery. Since it is associated with ground shaking, people recognize the sound and know what causes it.

Contrast known large earthquake behavior with the description of the unusual event in Alma 14:25-29.
  • The power of God came upon Alma and Amulek.
  • The two bound captives rose to their feet.
  • Alma prayed for strength.
  • Alma and Amulek broke their bonds, scaring those around them.
  • The others in the prison began to run away from the two prophets.
  • Overcome with fear, the others in the prison fell to the ground, still inside the structure.
  • The ground shook.
  • The prison walls collapsed.
  • The falling structure killed all the malefactors lying on the floor.
  • Sole survivors Alma and Amulek walked out of the destroyed prison unharmed.
  • Alma and Amulek began walking toward the city.
  • Many people heard the prison collapse.
  • Townspeople came running to see what had caused the noise.
  • Seeing the former prisoners walking out of the ruined structure scared them.
  • They began to run away in fear from Alma and Amulek.
Property damage and mortality in Ammonihah were apparently limited to the prison, allowing residents to explain the event away with scurrilous tales Alma 15:15. Widespread destruction in Ammonihah came a few months later via military invasion Alma 16:2.

It is clear the prison was some distance outside of town because Alma and Amulek were walking "into" the city when they met the multitudes running the other direction Alma 14:28. If our correlation for Ammonihah is correct, the prison may have been near the San Pedro river in which case liquefaction could have been a factor in the structure's collapse.
Proposed Ammonihah - El Hormiguero II on the San Pedro
The river in this location is at an elevation of 40 meters. The site sits on a bench above the river at 50 meters elevation, less than 1 kilometer from the south bank. We identify Sierra La Pita as the wilderness side of Ammonihah Alma 16:2. The highest mountainous point in the view above has an elevation of 470 meters. Marshy wetlands lie between Arroyo El Hormiguero and the San Pedro. 

Tuesday, February 3, 2015

Test #11 The Big Picture

We previously published ten tests based on disprovable criteria that we believe any viable Book of Mormon New World correlation will pass. The ten articles are:
For our eleventh test we zoom out to an eye altitude higher than 1,000 kilometers (1 Megametre) above the surface of the earth to identify Book of Mormon lands in their hemispheric context based on large-scale continental criteria. We number these criteria 1 - 10 and they appear in aqua below.

Two land masses 1 are oriented not north and south but northward and southward 2 from each other Alma 22:31-32, Helaman 3:8, 3 Nephi 3:24, 3 Nephi 6:2, Mormon 2:29, Ether 10:21.

Since a key distance within the land southward (city of Nephi to local land of Zarahemela) is on the order of 320 air kilometers (see the blog articles "Land Southward Travel Times" and "Plotting Alma") the distance the diligent Mosiah 8:8 Limhi explorers traveled probably did not exceed 2X that amount (see the blog article "Test #8 Limhi Expedition"). This means the distance from the city of Nephi to hill Ramah-Cumorah in the land northward probably did not exceed 640 air kilometers. Even allowing for generous interpretations of ambiguous passages such as Helaman 3:4 the extent of the world known to Nephite scribes prior to Moroni2's post-holocaust peregrinations probably did not exceed 2X the length of the Nephi/Ramah-Cumorah axis. This means the world of the Book of Mormon in the Western Hemisphere probably did not exceed 1,300 air kilometers in length at its maximum extent 3 and territory beyond those bounds was terra incognita as far as Mormon was concerned.

If the land southward constituted approximately one-half of the Nephite known world we would expect a maximum extent on the order of 700 air kilometers. Any distance in the land southward exceeding 1,000 air kilometers is probably out of the question 4. Furthermore, the land southward has some island characteristics 2 Nephi 10:20 being nearly surrounded by water Alma 22:32 5. We interpret that phrase to mean at least 75% of the land southward is waterfront littoral as opposed to land bridge.

The lands northward and southward are surrounded by four seas associated with the cardinal directions Helaman 3:8 6.

Four entities explicitly run from the east sea to the west sea. In order from south to north they are:
One entity, commonly thought to be continental in scope, explicitly does NOT run from the east sea to the west sea. The narrow (small) neck of land is a localized feature associated with only the west sea Alma 22:32, Alma 63:5. This does not mean there is not a substantial land bridge between the lands northward and southward. It just means the land bridge is not the feature the Book of Mormon calls the narrow (small) neck.

1. In our correlation, two land masses conjoin at the Isthmus of Tehuantepec. Topographically the isthmus contains the pass between the Sierra Madre mountain ranges on either side of it.
Proposed Nephite Known World
Culturally the isthmus has been a dividing line for millenia. This map shows the Olmec heartland and the Maya area.
Olmec Heartland and Maya Area
Another rendering of Mesoamerica showing the limits of the Maya area.
National Geographic December 1997
Major cultural areas in Mesoamerica according to the Foundation for Ancient Mesoamerican Studies, Inc.
FAMSI Map of Cultural Areas
The cultural boundary at the Isthmus of Tehuantepec persisted into Aztec times.
Aztec Empire at Conquest by Ian Mladjav
The isthmian region continues to be a political boundary today. The modern line between Veracruz and Oaxaca northward and Tabasco and Chiapas southward is essentially the Maya/non-Maya line from antiquity.
Modern Mexican State Boundaries
Politically, Central America today consists of the countries between Guatemala and Belize northward to Panama southward. Physiographically, many geographers include the Mexican states of Tabasco, Chiapas, Campeche, Yucatan and Quintana Roo in Central America. Merriam Webster, for example, defines Central America as the territory between the Isthmus of Tehuantepec on the northward and the Isthmus of Panama on the southward.

Our correlation of the Nephite land northward with Mexican territory north of the isthmus and the land southward with Mexican-Central American territory south of the isthmus has topographical, cultural and physiographical precedents. Criterion 1 satisfied.

2. These are vectors we think the Nephites had in mind when they coined the terms "land northward" and "land southward."Both originate at the mouth of the Suchiate which forms the border between Mexico northward and Guatemala southward. We correlate this area with Lehi's landing.
Northward Southward Azimuths
The 315 degree vector passes through our narrow neck of land, the east-west Bountiful/Desolation line, and the Bountiful/Desolation line along the upper Coatzacoalcos. The 323 degree vector passes through our hill Ramah-Cumorah. Lands along these azimuths on either side of the Isthmus of Tehuantepec are clearly in a northward-southward relationship. Criterion 2 satisfied.

3. We believe the world known to the Nephite record keepers extended from about Mexico City westward to about the Ulua River in modern day Honduras eastward. The air distance between these two at the points indicated is 1,256 kilometers.
Straight Line Distance Mexico City to Ulua River
Criterion 3 satisfied.

4. Our correlation of the Nephite land southward extends from the Coatzacoalcos westward to the Ulua eastward, and from northern Yucatan northward to the Pacific coast of Guatemala southward. No straight line distance in this vast territory exceeds 955 kilometers.
Proposed Land Southward Maximum Distances
Criterion 4 satisfied.

5. This is how we envision Mormon's description in Alma 22:32.
Proposed Land Southward Nearly Surrounded by Water
The total length of the red line on the map above is 3,808 kilometers. 3,363 kilometers are waterfront littoral. 445 kilometers are land bridge. This works out to be 88% water and 12% land. Criterion 5 satisfied.

6. Our model has seas in each of the four directions just as the text describes.
Four Seas in the Cardinal Directions
Criterion 6 satisfied.

7, 8, 9, 10. Moving from the south to the north, greater Nephi, the narrow strip of wilderness, greater Zarahemla and Bountiful are all continental entities running from sea to sea.
Four Entities from Sea East to Sea West
Criteria 7, 8, 9 and 10 satisfied.

The correlation illustrated clearly fits all ten big picture textual criteria. We submit that any viable Book of Mormon model should display a similarly high degree of fit to the text.

Sunday, February 1, 2015

Hill Riplah

I appreciate Ryan Williams' insights that sparked the research behind this article. Ryan served his mission in Guatemala. He owns land and does business in the country, and is exceptionally well-traveled in and well-informed about the region.

I have generally avoided the etymology of Book of Mormon geographic names or personal names because much of the material in print on this subject is highly speculative. The one exception to date in this blog is the wilderness of Hermounts. See point #4 in the article "Hermounts." I am not persuaded by the linkage some have suggested between the names 'Hermounts' and 'Tehuantepec'. See the blog article "Isthmuses" for the very late origin of the Nahuatl name 'Tehuantepec'.

Ripliancum, on the other hand, is explicitly defined in the text. Ether 15:8 says the name meant "large, or to exceed all." Our correlate for Ripliancum, the Papaloapan delta in Veracruz, is the largest wetlands in our land northward. The Papaloapan is the 2nd largest river in Mexico by volume of water discharged. (The Usumacinta is the largest and the Mezcalapa-Grijalva which joins the Usumacinta in modern times is the 3rd largest.) The excellent Book of Mormon Onomasticon maintained by Paul Y. Hoskisson, Stephen D. Ricks, Robert F. Smith and John Gee offers etymologies for 'Ripliancum' meaning surpassing, outstanding, massive, strong and abundant. 'Riplah' likewise connotes fertile or abundant. This means hill Riplah Alma 43:31, 35 is probably a large hill like Ripliancum is a large river.

Other hills of note in the text are the hill north of Shilom Mosiah 7:5, Mosiah 7:16, Mosiah 11:13, hill Manti in the local land of Zarahemla Alma 1:15, hill Amnihu east of Sidon in the land of Gideon Alma 2:15-17, hill Onidah in the land of Antionum Alma 32:4, and hill Raman-Cumorah Mormon 6:2-11, Ether 15:11 in the land northward. We will compare our correlate for hill Riplah with each of these other five. We have not as yet dealt with hill Shim Mormon 1:3, Mormon 4:23, Ether 9:3. Serious students of the text correlate Shim with various peaks from Puebla to southern Veracruz.

This is a big picture overview of the six hills we will compare and contrast.
Six Proposed Book of Mormon Hills
We correlate the hill north of Shilom with 2,428 meter Cerro Tuncaj in Baja Verapaz. In this image the semi-opaque white terrain plane is set at an altitude of 2,200 meters. Areas showing through in natural color are higher than 2,200 meters elevation. 
Proposed Hill North of Shilom
Vertical rise from the Motagua = 1,800 meters
Approximate area = 120 square kilometers
Grade = 18% running north from the Motagua to the summit

Following V. Garth Norman, we correlate hill Manti with 588 meter Cerro El Mirador just south of the ruins of Palenque in Chiapas. In this image the terrain plane is set at an altitude of 320 meters.
Proposed Hill Manti
Vertical rise from the Chacamax = 420 meters.
Approximate area = 24 square kilometers
Grade = 31% running north from the Chacamax to the summit

We correlate hill Amnihu with 400 meter Sierra del Lacandon just east of Boca del Cerro Canyon in Tabasco. In this image the terrain plane is set at an altitude of 220 meters.
Proposed Hill Amnihu
Vertical rise from the Usumacinta = 380 meters.
Approximate area = 18 square kilometers.
Grade = 22% running northeast from the Usumacinta to the summit
Grade = 39% running northeast from the Usumacinta to the 300 meter contour line
Grade = 72% running east from the Usumacinta in Boca del Cerro Canyon to the 300 meter contour line
For more about the battle that took place on Hill Amnihu ca. 87 B.C. see the blog articles "Gideon" and "Minon."

We correlate hill Onidah with 650 meter Starkey Hill north of the Belize in Cayo. In this image, the terrain plane is set at an altitude of 550 meters.
Proposed Hill Onidah
Vertical rise from the Belize = 275 meters.
Approximate area = 140 square kilometers
Grade = 15% running north from the Belize to the summit

Following John L. Sorenson & David A. Palmer, we correlate hill Ramah-Cumorah with 840 meter Cerro El Vigia near Santiago Tuxtla in Veracruz. In this image the terrain plane is set at an altitude of 350 meters.
Proposed Hill Ramah-Cumorah
Vertical rise from the Tilapan = 700 meters.
Approximate area = 40 square kilometers
Grade = 20% running west from the Tilapan to the summit

We correlate hill Riplah with 2,060 meter Cerro Pampache in the great bend of the Chixoy in Alta Verapaz. In this image the terrain plane is set at an altitude of 1,560 meters.
Proposed Hill Riplah
Vertical rise from the Chixoy = 1,670 meters.
Approximate area = 220 square kilometers
Grade = 23% running north from the Chixoy to the summit
Grade = 84% running east from the Chixoy to the 1,500 ,meter contour line
Grade = 81% running southeast from the Chixoy to the 1,500 meter contour line

There are several ways this impressive hill is surpassing, outstanding, massive, strong and abundant compared with its peers:
  • It has the largest surface area at 220 square kilometers
  • It has the steepest slopes at more than 80% on its west flank (100% is a 45 degree angle where run = rise)
  • It has the longest ridge line at 24 kilometers east to west
Cerro Pampache between the Chixoy and the Cahabon is the largest detached hill in highland Guatemala.
Proposed Hill Riplah in Context
The image above has the terrain plane set to 1,500 meters elevation with the white layer at full opacity.

If the etymology described above and our correlations are correct, Riplah is a highly appropriate name for this major upland which is home to one of Guatemala's premiere cloud forests.  

To see how we think the Moroni1, Lehi2 and Zerahemnah battle played out around this unique hill, see the blog articles "Manti" and "Captain Moroni in Space and Time."

Thursday, January 29, 2015

Test #10 Crossing Sidon

Seven passages in the text use a variant of the word "cross" to describe movement over Sidon. The word "ford" is not attested. All passages are in the book of Alma and all describe large groups in a military context. See the blog article "Crossing Things." These are the movements in textual order.
  • Nephite forces under Almacrossed Sidon from east to west from Gideon into the local land of Zarahemla just north of its border with Minon Alma 2:27, Alma 2:34-35
  • Lamanite forces crossed Sidon from west to east in wilderness south of Manti Alma 16:6
  • Zoramand his Nephite forces crossed Sidon from west to east from the local land of Zarahemla into Gideon, then marched south to the wilderness south of Manti Alma 16:7
  • Lamanite forces under Zerahemnah came around the north side of hill Riplah, down a valley and crossed Sidon from east to west. Lehi2 and his men engaged the Lamanites from their rear, while across Sidon Moroniand his forces engaged them at their front. Alma 43:35, Alma 43:40
  • Lamanite forces dug in along the southwestern border of Nephite lands were afraid to cross over the head of Sidon to mount an attack on Nephihah Alma 56:25
Large rivers typically have a limited number of places where crossing is practical. This is the sense of Judges 3:28. Steep canyon walls, swift currents or lateral wetlands make crossing difficult and hazardous. Because of this, the battlefield where Zoramengaged the Lamanite invasion force returning from Ammonihah + Noah and the valley where  Lehi2 drove Zerahemnah's men into the river are almost certainly the same place. Both are described as the wilderness south of the land of Manti Alma 16:6, Alma 43:27, 32. By the same token, the place where Nephite forces under Alma2 crossed from Gideon into the local land of Zarahemla and the place where Nephite forces under Zoram2 crossed from the local land of Zarahemla into Gideon are almost certainly the same crossing.

This leaves us with only 3 actual river crossing locations.
  1. Local land of Zarahemla just north of Minon to the west, land of Gideon to the east
  2. Opposing valleys west and east of the river in wilderness south of Manti
  3. Head of Sidon
This is our correlation showing all 3 crossings as stars on the modern map.
Three River Crossing Points Described in the Text
In our age, when people want to cross a river regularly, they build a bridge. There are 11 bridges over the Chixoy/Salinas/Usumacinta river from the head of the Chixoy to the mouth of the river at Frontera, Tabasco. The map below shows the bridges, marked with a square icon. Some archaeologists are convinced the Maya built a suspension bridge over the Usumacinta at Yaxchilan. 10 meter foundation platforms that may have supported bridge towers are still visible in the river at low water. We call this tantalizing possibility the "Ancient Yaxchilan Bridge." See point #15 in the blog article "The Usumacinta/Sidon Correlation" for an artist's rendering of the hypothesized 7th century A.D. bridge.
1 Possible Ancient & 11 Modern Bridges over the Proposed Sidon
Zooming in, we see that a modern bridge has been constructed at each of the 3 precise locations where our model predicts a Book of Mormon river crossing.
Boca del Cerro Bridge
Boca del Cerro is on the fall line where the mountains end and the coastal plain begins.
La Union Bridge
La Union is north of Cerro Pampajche which we correlate with Hill Riplah and south of the site of Chama which we correlate with Manti.
Bridge over Chixoy Dam
Chixoy Dam is where the Chixoy - Negro, Salama, Carchela and Santa Gertrudis all come together to form the Chixoy.

These were strategic places in Book of Mormon times. They are strategic places today which is why bridges have been built there.

In addition, the text describes other river crossings whose locations we can deduce.
  • Nephite forces under Alma2 crossed Sidon from west to east from the local land of Zarahemla to Gideon to engage the Amlicites on Hill Amnihu Alma 2:16-17. This is the same crossing location as #1 in the list above.
  • Amlicite survivors of the battle on Hill Amnihu crossed Sidon from east to west from Gideon to Minon to rendezvous with their Lamanite allies Alma 2:24. This location is not far from the valley of Gideon which itself was not far from Hill Amnihu. It has to be upriver from the main drainage basin in the Valley of Gideon because the Nephite army was encamped for the night in the Valley of Gideon and their retinue would have monitored the path from the army campsite back to the local land of Zarahemla.
  • On his first missionary journey beyond the local land of Zarahemla, Alma2 crossed Sidon from west to east from the local land of Zarahemla to Gideon Alma 6:7. This is the same crossing location as #1 in the list above. Upon his return from Gideon, Alma2 crossed Sidon from east to west, again in the same location Alma 8:1
  • After Alma2 & Amulek finished their missionary work in Sidom they crossed over Sidon from east to west and resided for a time in the local land of Zarahemla Alma 15:18. We know Sidom was in the east (see the blog article "Ammonihah, Noah & Sidom all East of Sidon"). It was close to Ammonihah Alma 15:1. We know Ammonihah was east of Gideon because Nehor was passing through Gideon to return to Ammonihah to preach Alma 1:7 when he murdered Gideon in the elderly hero's eponymous city. This means it is likely the local land of Zarahemla, Gideon, Ammonihan and Sidom were at similar latitudes. And this means Alma2 & Amulek probably crossed over Sidon at the same crossing location as #1 in the list above.
  • Alma2 was journeying southward from Gideon to Manti when he met the sons of Mosiah2 returning from their 14 year mission to the Lamanites Alma 17:1. Since Alma2 had his home in the local land of Zarahemela Alma 8:1, Alma 15:18 he crossed over Sidon from west to east at the same crossing location as #1 in the list above to begin his southward journey from Gideon.  Alma2 returned to his home in the local land of Zarahemla with his old friends, the sons of Mosiah2, by crossing yet another time across Sidon from east to west Alma 27:20 at the same crossing location. It is worth noting that Zarahemla east over Sidon to Gideon and then south to Manti seems to have been a standard route at this time in Nephite affairs. Zoram2 and his men took this same route to travel from the local land of Zarahemla to Manti Alma 16:7. The fact that Alma2 and the sons of Mosiah2 met on the trail going in opposite directions shows that the Gideon to Manti route had become standardized by ca. 77 B.C.
  • Korihor traveled from the local land of Zarahemla over Sidon eastward  to Jershon Alma 30:19 which was in the NE corner of Nephite lands just south of land Bountiful Alma 27:22. This makes it likely Korihor crossed Sidon to the NE through the most capital parts of the land en route to Jershon just as Coriantumr did about 23 years later en route to the city of Bountiful Helaman 1:23.
  • The people of Ammon (Anti-Nephi-Lehi) traveled from Jershon by the east sea across Sidon from east to west into the land of Melek Alma 35:13. There was a river crossing at Melek because Alma2 went from Melek west of Sidon north across the NW flowing river to Ammonihah east of Sidon Alma 8:6.
  • The Lamanites under Zerahemnah came in a sweeping motion southward from Jershon into the wilderness south of Manti. They intended to cross over Sidon from west to east at Manti to mount a surprise attack Alma 43:24. That is why they had to cross Sidon from east to west in the wilderness south of Manti Alma 43:35
  • The 4,000 Lamanites captured by Moroniand Parhoran (Yale text orthography) NW of Nephihah were sent to live with the people of Ammon in Melek Alma 62:17. They likely crossed over Sidon from east to west at Melek.
This gives us four more crossing points to add to our list. Sidon crossing locations attested or implied in the text from north to south:
  1. NE of the city of Zarahemla toward the most capital parts of the land
  2. Local land of Zarahemla just north of Minon to the west, Gideon to the east
  3. Amlicites from Gideon west to Minon
  4. Melek
  5. Manti
  6. Opposing valleys in the wilderness south of Manti
  7. Head of Sidon
This is a map of our correlation of the 7 river crossings described in the text shown as stars.
Seven River Crossing Locations Described in the Text
We saw above that three of the proposed Book of Mormon river crossings are right where a modern bridge stands today. That pattern continues.
Chama Bridge
Our proposed Manti crossing is at Chama Bridge.
Ancient Yaxchilan Bridge
Our proposed Melek crossing is right where some archaeologists place the Ancient Yaxchilan Bridge.
Puente Usumacinta
And, finally, our proposed Northeast Zarahemla crossing is precisely where the largest bridge over the Usumacinta River stands today, the Puente Usumacinta that carries Mexican Federal Highway 186 coming from Villahermosa and going to Chetumal on the Caribbean. The ruin we correlate with the Nephite city of Bountiful, by the way, is in a suburb of Chetumal.

The only one of our Book of Mormon river crossings without an ancient or modern bridge is the point south of the Valley of Gideon where the Amlicites went over the river to join their Lamanite comrades who had come undetected up the central Sidon corridor into Minon.

See point #40 in the blog article "Test #9 River Sidon" for a description of Ron Canter's 2004 Rio Usumacinta Navigation Survey. Experienced rivermen scientists found six places along the upper Usumacinta where wear patterns from ropes on mooring stones indicated canoes tied up in that location during Maya times. On the map blow we call these six places "bollards." The survey also found six places where cross currents made for easy canoe transit back and forth across the river. On the map below we call these six places "ferries."
Bollards and Ferries along the Usumacinta from Yaxchilan to Pomona
Our proposed Amlicite crossing is precisely where the 2004 Rio Usumacinta Navigation Survey found ancient bollards and excellent crossing conditions at San Jose Usumacinta.
San Jose Usumacinta Bollards & Ferry
The survey also found many bollards and very good crossing conditions at Yaxchilan. So, all 7 of our proposed Book of Mormon river crossing points have one or more of the following validations:
  • an ancient or modern bridge
  • ancient mooring stones where canoes were tethered
  • cross currents and eddys that allowed easy paddling across the river
When Cortez came through Tabasco and the Peten in 1524 en route to Honduras, he and his large military entourage including cavalry and cannon crossed many rivers. In every case they crossed on hastily-constructed pontoon bridges. The Spaniards marveled how quickly their native allies were able to construct such bridges, and how sturdy the structures were as heavy loads passed over them. When the Spaniards conquered Guatemala, they found many rope suspension bridges in use by the indigenous peoples. When Europeans first entered the Soconusco (Pacific coast of Chiapas & western Guatemala) they found vast numbers of canoes stationed at river crossings that were available as a public utility similar to the way European cities provide fleets of bicycles for public use. So how did Nephites and Lamanites cross over Sidon? They absolutely did not wade across. The notion that Book of Mormon peoples forded the river like Mormon Handcart Pioneers crossing the Sweetwater is utter nonsense. Many smaller streams in Mesoamerica are too large for pedestrian fording, let alone the mighty Usumacinta. The Nephites and Lamanites crossed Sidon the same way the ancient Maya did and their descendants still do, in fleets of small watercraft or on bridges.

One more important point needs to enter our discussion of river crossings. There are certain places, typically inside steep canyons, where river crossings are rarely attempted. The terrain is simply too rough. Here is a map showing seven reaches of the Chixoy/Salinas/Usumacinta where crossings are unlikely.
Seven Canyons on the Chixoy/Salinas/Usumacinta
The 2004 Rio Usumacinta Navigation Survey found no evidence of ancient boat harboring along these difficult sections of the river. They did find one mooring stone that would have served to warp boats (pull them upstream with a rope tied to a stationary object) up Chicozapote Falls. None of our proposed Book of Mormon crossing locations fall within these problematic reaches of the river.

From the text we identified 7 unique places where Nephites and Lamanites crossed Sidon. We then compared these 7 points with the locations of 1 ancient and 11 modern bridges, 6 places with ancient canoe mooring stones, and 6 places where currents and eddies favor river crossings. We then compared our 7 Book of Mormon locations with 7 canyons where river crossings would be difficult and hazardous. We found 100% correspondence between proposed Book of Mormon locations and known likely locations for river crossings. We found zero correspondence between proposed Book of Mormon river crossings and difficult canyon terrain. We submit that any viable Book of Mormon map should show a similarly high degree of fit to the text with compelling external validation.