Yggdrasil, the World Tree (Human Odyssey) In the beginning of the Norse cosmos, there existed an eternal Void, known as Ginnungagap. Out of this nothingness sprang Yggdrasil, a huge Ash tree. Its newly emerging branches held two primordial worlds;
n Norse mythology, the World Tree called Yggdrasill runs like a pole through this world and the realms above and below it. Yggdrasill is a great ash tree that connects all living things and all phases of existence.