In ancient myths, the World Tree or the Axis Mundi typically serves as the celestial axis that connects various realms of existence. This concept is symbolized in different cultures by structures like the Yggdrasil in Norse mythology, which links the heavens, earth, and underworld. The World Tree embodies the interconnectedness of all life and serves as a portal for gods and heroes, facilitating journeys across different dimensions. This motif reflects the cultural understanding of the universe as a multidimensional space where realms coexist.