In Norse mythology, the mythical realm where the dead reside is called Helheim, ruled by the goddess Hel. This domain is designated for those who did not die in battle, contrasting with Valhalla, which is reserved for slain warriors. Helheim is characterized by a cold and desolate atmosphere, symbolizing the inevitability of death. The myths surrounding Helheim reflect the Norse understanding of mortality and the afterlife, presenting a complex view of life, death, and what lies beyond.