Yggdrasil is a mighty tree whose trunk rises in the geographical center of the Scandinavian spiritual space. The rest of this cosmos, including the nine worlds, is located around it and held together by its branches and roots, which connect the various parts of the cosmos to each other. Therefore, the well-being of the cosmos depends on the well-being of Yggdrasil.
The first element in Yggdrasil's name, igr, means "terrible" and is one of the names of the god Odin, the second element, drasil, means "horse." Based on this, the name of the tree is translated as "horse of Odin", referring us to the time when the great sacrificed himself to find the runes. In Old Norse literature, Yggdrasil is usually ash. ⠀
In the words of the Old Norse poem "The Divination of the Volva," Yggdrasil is a "friend of the clear sky," so tall that its crown is above the clouds. Its roots stretch back to the underworld. and the Gods hold their daily council at this tree. ⠀
Animals live among the strong branches and roots of Yggdrasil. The serpent Nidhogg lurks around its base, a nameless eagle sits on its upper branches, and the Ratatosk squirrel rushes up and down the trunk, transmitting the snake's insults to the eagle and vice versa. Among the branches of Yggdrasil, four deer live: Dain and Dwalin, Duneir and Durathror. They eat up the leaves of the tree of life.