Yggdrasils

Yggdrasil is a massive, sacred ash tree central to Norse cosmology. Its existence connects the nine worlds, providing a cosmic framework. The tree's roots delve into different realms, with one reaching Niflheim, another to Jotunheim, and a third to Asgard, the realm of the gods. The trunk of Yggdrasil supports the world of mortals, Midgard.

Various creatures inhabit Yggdrasil. An eagle resides at its crown, and the serpent Níðhöggr gnaws at its roots. Squirrels named Ratatoskr run up and down the trunk, carrying messages between the eagle and Níðhöggr, often with insults. Deer also graze on its leaves.

The well of Urd, guarded by the Norns, is located at one of Yggdrasil's roots. The Norns are fate-weavers who tend to the tree, watering its roots with sacred water from the well to keep it healthy. Yggdrasil is seen as the axis of the world, a symbol of life, death, and rebirth, and its well-being is intrinsically linked to the fate of the cosmos. It is a fundamental element in understanding the Norse worldview and their myths.