When the Mesopotamian flood hero
Utnapishtim is said to be at pî nârâti, “the mouth of the
rivers” (tablet XI, lines 194-97), it is natural to suppose that
this is at the Armenian source of the Tigris and Euphrates. This
also coheres with the fact that Gilgamesh, in seeking Utnapishtim,
crosses Mt. Mashu—that is, Mt. Masios in Armenia—and the
dark tunnel he goes through fits a tunnel at the end of the river
Tigris.