Yggdrasil, Old Norse Yggdrasill, also: Weltesche, is in the Nordic mythology The name of an ash, which as a world tree embodies the entire cosmos.Other Names of this tree were probably Mimameid or Lärad.
Yggdrasil has three largeRoots, one of which grows to Jotunheim, the land of
the giants, where alsoMimirs wells.
The other root leads to Niflheim to the source Hvergelmir, Where the dragon Nidhöggr gnaws at her.The third root is near Asgard.