Shortly after his arrival Joseph rowed up the Grand River to Lyman Wight's ferry to explore land on the north bank in Daviess County [Missouri]. On a high bluff overlooking the river someone in the party discovered the ruins of what seemed to be an altar and excitedly led the prophet to it. After examining it Joseph stood silent, his eyes sweeping over the prairie that rolled away beneath him.... The glory of the scene made Joseph heady as with new wine. 'This is the valley of God in which Adam blessed his children,' he said, 'and upon this very altar Adam himself offered up sacrifices to Jehovah.... We will lay out a city which shall be called Adam-ondi-Ahman. Here Adam, the Ancient of Days, shall come to visit his people.'
Fawn Brodie,
No Man Knows My History: the life of Joseph Smith, by Fawn Brodie, Random House, 1971, p. 211