Wikipedia
Adam-ondi-Ahman (, sometimes clipped to Diahman) is a historic site in Daviess County, Missouri about five miles south of Jameson. It is located along the east bluffs above the Grand River. According to The Church of Jesus Christ of Latter-day Saints (LDS Church), it is the site where Adam and Eve lived after being expelled from the Garden of Eden. It teaches that the place will be a gathering spot for a meeting of the priesthood leadership, including prophets of all ages and other righteous people, prior to the Second Coming of Jesus Christ.
The Latter Day Saints proposed to build a temple there. Such efforts were halted in the 19th century as a result of the 1838 Mormon War to evict the Latter Day Saints from Missouri. Their having declared Adam-ondi-Ahman as a sacred site for a temple was a flash point in that confrontation.
After the Latter Day Saints were evicted, residents renamed the site Cravensville. It was the site of a skirmish during the American Civil War on August 4, 1862, when Union troops attempted to stop Confederate reinforcements in the First Battle of Independence. Six Confederates were killed and 10 wounded. The Union forces had five wounded.
Today, most of the site is owned by the LDS Church and is used predominantly as farmland.
"Adam-ondi-Ahman" (originally "This Earth Was Once a Garden Place") is an LDS hymn and was included in the first Latter Day Saint hymnal and quickly became one of the most popular songs of the early church. It was published in 1835 in Messenger and Advocate and is hymn number 49 in the current LDS Church hymnal.
The hymn was written by W. W. Phelps, an early church member and poet. The music comes from the 1835 Southern Appalachian folk hymn "Prospect of Heaven".
The Latter Day Saint term, Adam-ondi-Ahman, refers to the place that Adam and Eve went after they were evicted from the Garden of Eden.