Twilight of the gods (Ragnar? K) is a series of catastrophes predicted in Nordic mythology, including wars that killed many important gods (Odin, Thor, Frey, Heimdahl, Heimdahl, Musper, Frost Giant, Loki, etc.).
Caused countless natural disasters, and then the whole world sank to the bottom of the water. However, in the end, the world was restored, and the surviving God and two human beings re-established a new world. The twilight of the gods is mainly recorded in poetry and prose.
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After that:
The sea was rough and the land was flooded. Fenrir's eyes and nostrils are on fire, while Jormungandr is breathing poisonous gas. Both of them sent messages to Asgard (Gunos:? sgar？ R) run. Heaven and earth were soon enveloped by Jormungandr's poisonous gas.
The battlefield is full of corpses of gods and giants and monsters, and the plain has become a sea of blood. Nidhogg, the black dragon, flew over the battlefield, its wings made a terrible noise, greedily gnawing at the bodies stained with blood and remaining warm, and the sky gave off a dark red light like bleeding, dyeing the sky and the earth deep red, and there were very few people standing on the battlefield.
Then Steyr put the sword of victory (L? Vateinn) was thrown into the sky. In the fiery purple flame, the "atrium" has become a sea of fire. The pillar of fire runs through the universe, and the smoke does not reach the top of the mountain. The world tree supporting the universe is swallowed up by the flame and collapses, and the whole universe collapses.
Baidu Encyclopedia-Twilight of the Gods