Yggdrasil, or the World Tree, is a giant ash tree central to Norse cosmology that connects the nine realms of existence. It symbolizes the interconnectedness of life, wisdom, and the cycle of birth and rebirth. In Norse mythology, Yggdrasil is a source of life and knowledge, where gods gather and various creatures reside, including the serpent Nidhogg that gnaws at its roots. The tattoo often features intricate designs of the tree's branches and roots, sometimes adorned with Norse runes or symbols, signifying personal growth, strength, or a connection to one's ancestry. Popular placements for Yggdrasil tattoos include the back, arm, or chest, allowing for larger and more detailed artwork that embodies its complex significance in Nordic culture and mythology.