Ragnarok by Micha F. Lindemans
Ragnarok ("Doom of the Gods"), also called Gotterdammerung, means the end of the cosmos in Norse mythology. It will be preceded by Fimbulvetr, the winter of winters. Three such winters will follow each other with no summers in between. Conflicts and feuds will break out, even between families, and all morality will disappear. This is the beginning of the end.
The wolf Skoll will finally devour the sun, and his brother Hati will eat the moon, plunging the earth [into] darkness. The stars will vanish from the sky. The cock Fjalar will crow to the giants and the golden cock Gullinkambi will crow to the gods. A third cock will raise the dead.
Complete text here.
Another take on the subject.
