For those of you who don't know the story, here it is:
http://users.erols.com/bcccsbs/c5water.htmIn the beginning was Yawning Gap: to one side of it was the Place of Fog and Mist; to the other side was the Place of Fire. Ginnunga Gap, Niflheim, Muspellsheim -- these were in the beginning. Yawning Gap filled up with chill streams flowing from the Place of Fog and Mist; the heat from the Place of Fire turned the chill streams into mist; out of the mist was formed two beings -- Ymir the ancient Giant, and the cow Audhumla.
Ymir stayed by Audhumla and drank her milk. Giants and Giantesses came from his feet; the race of Giants multiplied. Then another race appeared. One day Ymir saw Audhumla breathe upon a cliff of ice and lick with her tongue the place she breathed on. As her tongue went over and over the place the Giant saw that a figure was being formed. It was not like a Giant's form; it was more shapely. A head appeared in the cliff and golden hair fell over the ice. As Ymir looked upon the being that was being formed he hated him for his beauty.
Audhumla, the giant cow, went on licking the place where she had breathed. At last a man completely formed stepped from the cliff. Ymir, the ancient Giant, hated him so much that he would have slain him then and there. But he knew that if he did this Audhumla would feed him no more on her milk.
Buri was the name of the one who was formed in the ice-cliff. Buri, married to one of the Giantesses, had a son. His son, Bur married to Bestla, daughter of the Giant Bolthorn, had three sons: they were the first of the Aesir, the first of the Gods.
Their names were Oithin, Honir, and Lothur. For a time they lived in peace with Ymir and his children. Then as the children of Bur multiplied and the children of Ymir multiplied there was war between them. The ancient Giant was slain and his blood poured out in such mighty flood that his sons were all drowned in it, all except the Giant Bergelmir. He was in a boat with his wife when the flood came; they floated away on the flood to the place that came to be called Jotunheim, from them the race of Giants came, and in that place the race of Giants lived.
Now Oithin and his brothers and his sons took the body of Ymir -- the vastest body that ever was -- and they flung it into Yawning Gap, filling up the great chasm with it. They dug the bones out of the body and they piled them up into mountains; they took the teeth out and they made them into rocks; they took the hair of Ymir and they made it into grasses and forests of trees; out of his hollow skull they made the sky.
Oithin with his brothers and sons did more than this. They took the sparks and the clouds of flame that blew from Muspellsheim and they made them into the sun and moon and all the stars that are in the sky. The sun and the moon were drawn by horses: the sun by Arvak and Alsvith, the Early-waking One and the Fleet One. When Oithin lighted up the world with the sun and the moon, the Giants who were very wroth: they found two of the fleetest and fiercest of the mighty wolves of Jotunheim, and they set them to follow Sol and Mani, the sun and the moon. And ever afterwards Sol and Mani were pursued by the wolves out of Jothunheim, the place of the Giants.