In Sumerian myth, Nammu is the Great Serpent Goddess. She represents the dynamic power of waters beyond, beneath, and around the earth. Legend tells of her regenerative and creative powers. As goddess of the abyss, she gave birth to earth and heaven.
Nammu brought forth the cosmic mountain An-Ki, Heaven, and Earth. An and Ki brought forth a son, Enlil, God of air or breath. He separated Heaven from Earth and carried off Earth, his mother Ki, to be his bride.