Again Presidet Young said Joseph the Prophet told me that the garden of Eden was in Jackson Co Missouri, & when Adam was driven out of the garden of Eden He went about 40 miles to the Place which we Named Adam Ondi Ahman, & there built an Altar of Stone & offered Sacrifize. That Altar remains to this day. I saw it as Adam left it as did many others, & through all the revolutions of the world that Altar had not been disturbed. Joseph also said that when the City of Enoch fled & was translated it was whare the gulf of Mexico now is. It left that gulf a body of water.
[Source: Wilford Woodruff's Journal: 1833-1898 Typescript, Volumes 1-9, Edited by Scott G. Kenney, Signature Books 1993, http://amzn.to/newmormonstudies]