In Norse mythology, the final battle that signifies the end of the world is known as Ragnarök. This event marks a cataclysmic clash between the gods, giants, and other figures, resulting in widespread destruction and the death of many deities, including Odin and Thor. Ragnarök symbolizes not only an end but also a renewal, as it leads to the rebirth of the world. This myth encapsulates themes of fate, cosmic struggle, and the cyclical nature of existence, illustrating how destruction can pave the way for new beginnings in Norse belief systems.