"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 #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 place that Adam and Eve went after they were evicted from the Garden of Eden.