The serpent-like creature that is a significant myth in Norse and Germanic mythology is the Midgard Serpent, also known as Jormungandr. According to legends, Jormungandr is so large that it encircles the earth, biting its own tail. It is prophesied that during Ragnarok, the end of the world, Jormungandr will rise to fight Thor, resulting in mutual destruction. This creature embodies the concepts of chaos and the cyclical nature of existence.