Midgard

mid'gard, in Scandinavian mythology, the middle world or dwelling place of the human race. It was connected with Asgard, the dwelling of the gods, by the rainbow bridge. Midgard was formed from the eyebrows of the giant Ymir, the first created being. The Midgardsorm or Midgard serpent was an immense serpent--one of the offspring of Loki. It was cast by Odin into the sea which encircles the earth and was believed to lie coiled in the waters about the earth. See Mythology