Definition: Niflheim (Niflheimr) is one of the nine worlds mentioned in Norse mythology. Niflheim is a realm of cold, possibly the location of Hel's realm. Niflheim is the lowest of the worlds, beneath the third root of Yggdrasil.
By N.S. Gill, About.com
Norse Mythology - Gods and GoddessesNorse Teutonic MythA to Z
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