In Norse mythos, there were nine worlds and these were connected to nine levels of consciousness from sub to supra: Down under, the Norse world of corpses was called Nair, or Hel, along with Jotunheimr, the Land of Giants, and the world of ice (Niflheimr, or Nefethel). In the conscious realm, Svartalfheimr and Alfheimr were …
Odin's Other Eye 