Ragnarok, in Norse mythology, is known for the apocalyptic battle between gods, giants, and monsters, leading to the end of the world as it is known. This event signifies not only the final conflict but also the cyclical nature of existence, where destruction leads to rebirth and renewal. Key figures, including Odin, Thor, and Loki, meet their fates during this cataclysm. Ragnarok illustrates themes of fate, sacrifice, and the inevitability of change, emphasizing that even in destruction, there is a potential for new beginnings and the ongoing cycle of life in the Norse worldview.