Lakota Sioux Chief Black Hawk's depiction of a horned Thunder Being (Heyókȟa) on a horse-like creature with eagle talons and buffalo horns. The creature's tail forms a rainbow that represents the entrance to the Spirit World, and the dots represent hail. c.1881. Accompanying the picture on the page were the words: "Dream or vision of himself changed to a destroyer and riding a Buffalo Eagle."









