An Yggdrasil amulet in bronze surrounded by a runic circle.
Yggdrasil is an immense ash tree with branches that extend far into the heavens. It is central and very holy in Viking mythology, and the gods hold their courts there on daily basis. Warden trees linked to Yggdrasil were kept as late as the 19th century in venerated areas of Scandinavia. Offerings were made to the trees, that were considered to be guardians and bringers of luck.