Offerings of Primordial People

The earliest evidence of probable offerings to supernatural powers was found in Drachenloch, in the Tamina Vally, in Switzerland. 

Bear Bones had been placed there with some flesh still attached to the skulls, brains intact, and some leg bones, in a state as if to be eaten. 

They are thought to have been offerings to appease the animal spirits, to thank them for a successful hunt, or to seek favor with the animal spirits for future hunts.