In Scandinavian myth, Ragnarok is a terrible final battle in which gods, mankind and all creation perish.
According to the story, Ragnarok will be preceded by a period of lawless anarchy and followed by the descendents of Lif and Lifthrasir, the only two survivors of the catastrophic war.
The tale is found in two main sources. The Poetic Edda was written in the 13th century, being a compilation of existing poetry. Also in the 13th century the noted historian, writer and statesman Snorri Sturluson wrote a Prose Edda, which makes frequent reference to the Poetic Edda.
The story is by no means a dead one, locked in the past. It’s been influential to contemporary video games, film and Marvel comics has repeatedly adapted the Ragnarok cycle in The Mighty Thor¹ and subsequent Thor comics.