Anthony W. Ivins says that Book of Mormon geography has not been revealed.
Anthony W. Ivins, Speech, April 5, 1929, in Conference Report (Salt Lake City: The Church of Jesus Christ of Latter-day Saints, 1929), 15–16
NO DEFINITE SOLUTION
There is a great deal of talk about the geography of the Book of Mormon. Where was the land of Zarahemla? Where was the City of Zarahemla? and other geographic matters. It does not make any difference to us. There has never been anything yet set forth that definitely settles that question. So the Church says we are just waiting until we discover the truth. All kinds of theories have been advanced. I have talked with at least half a dozen men that have found the very place where the City of Zarahemla stood, and notwithstanding the fact that they profess to be Book of Mormon students, they vary a thousand miles apart in the places they have located. We do not offer any definite solution. As you study the Book of Mormon keep these things in mind and do not make definite statements concerning things that have not been proven in advance to be true.