Niflheim
realm of primordial ice and cold in Norse mythology
Niflheim is the world of frost and cold of Norse Mythology. Frost Giants live there. The river Hvergelmir also is there. Yggdrasil has one of its roots in the spring of the river. The serpent Nidhogg gnaws at this root.
Niflheim is ruled by the Giantess Angrboda.
