Welcome to Niflheim
Niflheim is the cold dark place located in the lowest levels of the world. Located under the the third root of Yggdrasil, "The World Tree", Niflheim is a land where icy fogs and mists fill the air and monsters roam the land.
Within Niflheim, there are three other lands:
Helheim, The land of the dead
Hvergelmir, The roaring cauldron
Nastrond, The shore of corpses and home of the serpent Nidhogg