Yggdrasil dimension

The Yggdrasil dimension is one of the 9 added dimensions of Norse mythology. It does not have much of a function besides being the junction point between Midgard(the vanilla surface dimension), and the 8 other Norse world.

Description
The Yggdrasil dimension features only the massive world tree Yggdrasil and the rainbow bridge, Bifröst. The rest of the dimension is an empty void with no natural features, mob spawning or resources. Entering this dimension will land you next to the only central Bifröst activator, which is the only way to access the 8 other Norse world.

Mythological background
The Norse believed that the universe was held on the roots and branches of a massive cosmic tree, which might be a yew or an ash. The Norse believed that universe was made up of nine worlds, most of which had their own people. What exactly are the specific nine worlds varies from source to source, but in this mod, the nine worlds are the following:


 * Midgard (the vanilla surface dimension)
 * Asgard
 * Vanaheim
 * Alfheim
 * Jotunheim
 * Muspelheim
 * Niflheim
 * Niðavellir
 * Helheim