Then the Stone Boy said to his mother's brothers, "Now we Will go back to your sister, to my mother, but before we go I will destroy Iya so that he may do no more mischief or hurt the people."

He trod on Iya's chest and his breath rushed out of his mouth and nostrils like a mighty wind and it whirled and twisted, breaking down trees, tearing up grass, throwing the water from the lake, and even piling the rocks and earth over the carcasses of the coyote and the snake tree, so that the thunderbird came rushing through the air to know what all this tumult was about. With his cloud shield he rushed into this great whirlwind, and while the lightning roared and flashed from his eyes, he fought the whirlwind and carried it away into the sky.

Then the Stone Boy said to Iya, "I will now tread your head and your arms out flat like a dried skin and you shall remain forever here in this evil valley where there is no tree, nor grass, nor water, and where no living thing will ever come near you. The sun shall bum you and the cold shall freeze you and you shall feel and think and be hungry and thirsty but no one shall come near you.

Iya grew so large that he lay almost across the valley. His hands were up on the hill where the Stone Boy first showed himself. When the Stone Boy told him his fate, his hands grasped for something and he felt the Stone Boy's robe. This he quickly threw over himself and immediately he became invisible. But the Stone Boy saw what he was doing and jumped quickly to trample on his head before he got the robe over himself. When the Stone Boy trampled the breath out of Iya, his mouth gaped wide open. He got the robe over his head before the Stone Boy could get his feet on him. When the Stone Boy did trample Iya he stepped into his mouth and he closed his jaws like a trap and caught both of the Stone Boy's feet between his teeth.

Iya could not hurt the Stone Boy, but he held the feet very tightly between his teeth and when the Stone Boy drew out one foot he closed still closer on the other so that when that one was dragged out, the moccasin was left in Iya's mouth, and was invisible and could not be found.

The Sun Dance and Other Ceremonies of the Oglala Division of the Teton Dakota, p. 202-203