But Jötunheim and Muspelheim and Hel waited tremblingly; it might be that Fenrir the Wolf might not burst the bonds wherewith the Gods had bound him. Without his being loosed the Gods might not be destroyed. And then was heard the rending of the rock as Fenrir broke loose. For the second time the Hound Garm barked in Gnipa's Cave.
Then was heard the galloping of the horses of the riders of Muspelheim; then was heard the laughter of Loki; then was heard the blowing of Heimdall's horn; then was heard the opening of Valhalla's five hundred and forty doors, as eight hundred Champions made ready to pass through each door.
Odin took council with Mimir's head. Up from the waters of the Well of Wisdom he drew it, and by the power of the runes he knew he made the head speak to him. Where best might the Æsir and the Vanir and the Einherjar, who were the Champions of Midgard, meet, and how best might they strive with the forces of Muspelheim and Jötunheim and Hel? The head of Mimir counseled Odin to meet them on Vigard Plain and to wage there such war that the powers of evil would be destroyed forever, even though his own world should be destroyed with them.
The riders of Muspelheim reached Bifröst, the Rainbow Bridge. Now would they storm the City of the Gods and fill it with flame. But Bifröst broke under the weight of the riders of Muspelheim, and they came not to the City of the Gods.
Jörmungand, the serpent that encircles the world, reared itself up from the sea. The waters flooded the lands, and the remnant of the world's inhabitants was swept away. That mighty flood floated Naglfar, the Ship of Nails that the Giants were so long building, and floated the ship of Hel also. With Hrymer the Giant steering it, Naglfar sailed against the Gods, with all the powers of Jötunheim aboard. And Loki steered the ship of Hel with the Wolf Fenrir upon it for the place of the last battle.
Since Bifröst was broken, the Æsir and the Vanir, the Asyniur and the Vana, the Einherjar and the Valkyries rode downward to Vigard through the waters of Thund. Odin rode at the head of his Champions. His helmet was of gold and in his hand was his spear Gungnir. Thor and Tyr were in his company.
In Mirkvid, the Dark Forest, the Vanir stood against the host of Muspelheim. From the broken end of the Rainbow Bridge the riders came, all flashing and flaming, with fire before them and after them. Niörd was there with Skadi, his Giant wife, fierce in her war-dress; Freya was there also, and Frey had Gerda beside him as a battle-maiden. Terribly bright flashed Surtur's sword. No sword ever owned was as bright as his except the sword that Frey had given to Skirnir. Frey and Surtur fought; he perished, Frey perished in that battle, but he would not have perished if he had had in his hand his own magic sword.
And now, for the third time, Garm, the hound with blood upon his jaws, barked. He had broken loose on the world, and with fierce bounds he rushed toward Vigard Plain, where the Gods had assembled their powers. Loud barked Garm. The Eagle Hræsvelgur screamed on the edge of heaven. Then the skies were cloven, and the tree Ygdrassil was shaken in all its roots.
To the place where the Gods had drawn up their ranks came the ship of Jötunheim and the ship of Hel, came the riders of Muspelheim, and Garm, the hound with blood upon his jaws. And out of the sea that now surrounded the plain of Vigard the serpent Jörmungand came.
What said Odin to the Gods and to the Champions who surrounded him? "We will give our lives and let our world be destroyed, but we will battle so that these evil powers will not live after us." Out of Hel's ship sprang Fenrir the Wolf. His mouth gaped; his lower jaw hung against the earth, and his upper jaw scraped the sky. Against the Wolf Odin All-Father fought. Thor might not aid him, for Thor had now to encounter Jörmungand, the monstrous serpent.