Sterling Silver Tree Of Life (Yggdrasil) With Ravens Ring | Many ancient cultures had mythologies and legends surrounding a Tree of Life. Celtic mythology portrayed a tree of life connecting heaven and the earth. Viking mythology told stories of Yggdrasil, the great tree whose branches connected the nine worlds and continued on into the heavens. Christianity also reference a Tree of Life in the Old Testament book of Genesis. This wonderful handmade ring was inspired by all of this rich legacy.