The Yggdrasil Labyrinth is a complex, multi-layered dungeon found in the video game series Etrian Mystery Dungeon. It is named after Yggdrasil, the world tree from Norse mythology, symbolizing the interconnectedness of various realms. Players navigate through this labyrinth, facing various monsters and challenges while exploring its depths. In the game, the labyrinth is filled with treasures, traps, and unique environments. Players can form parties with different character classes, utilizing their skills to overcome obstacles. The design encourages exploration and strategy, making each descent into the labyrinth a unique experience.