Horse burial is the practice of burying a horse as part of the ritual of human burial, and is found among many Indo-European speaking peoples and others, including Chinese and Turkic peoples. The act indicates the high value placed on horses in the particular cultures and provides evidence of the migration of peoples with a horse culture. Human burials that contain other livestock are rare; in Britain, for example, 31 horse burials have been discovered but only one cow burial, unique in Europe. This process of horse burial is part of a wider tradition of horse sacrifice. An associated ritual is that of chariot burial, in which an entire chariot, with or without a horse, is buried with a dead person.