In Turkic and Mongolian mythology, the birch tree, regarded as a cosmic axis between earth and sky, was regarded as sacred to him, as was the horse (horse-sacrifice was a part of his worship). Ülgen symbolizes goodness, welfare, abundance, plentiness of food, water, etc. Furthermore, he created earth, heaven and all living beings. In addition, he controls the atmospheric events and movements of stars. He creates land for people to live on, the heads of both humans and animals and the rainbow. He was regarded as the patron god of shamans and the source of their knowledge.