The story of a great flood that once overwhelmed the Earth...is one of the most widespread of all myths. The earliest flood story is found in the Mesopotamian epic of Gilgamesh, in which Utnapishtim frees birds to see if the waters are subsiding. The Native American Mandan tribe spoke of Lone Man, who survived a great flood in his Big Canoe. The Greek god Zeus, tired of the wickedness of humans, sent a flood to drown them all. But the giant Prometheus warned his son Deucalion, who built an ark in time to save himself and his wife.