The swastika is an ancient Eurasian symbol, found in rock carvings since prehistoric times. In Hinduism, Buddhism, and Bon, the swastika is a common and auspicious decorative design, symbolizing the motions of the sun, the wheel of reincarnation, and the eternal nature of the teachings. In Tibetan, it is yungdrung (“Eternal”), the principal religious symbol of the Bon religion, and the organized system of Bon that emerged in dialogue with Buddhism is generally referred to as Yungdrung Bon. The strongly negative association of this design in Western countries is due to its appropriation by the twentieth-century Nazis as a symbol of their racial theories.