Yggdraeil it's a enormous tree with his inside infinite with a lot of doors for other universes and multiverses but his endraces are very hided on some universes, Yggdrasil it's a enormous tree has I stayed that fly on the void by a giant ground platform with grass and more with no animals only a concier/protector that being you or just someone, Yggdrasil can also communicate by the feelings has the concier/protector of the yggdrasil can also feel Yggdrasil feelings, Good luck!