Die Nornen Urd, Werdanda, Skuld, unter der Welteiche Yggdrasil - Credit: Ludwig Burger
Yggdrasil is the great world tree
that lies at the center of the nine worlds within the cosmological order
of Norse mythology. The tree unites the nine worlds, including the heavens and the world of the dead, and is tended by the Norns, a group of female beings similar to the Fates.