Guide said that some of the paintings could be 8,000 years old . Scientists : Figures were created by the scientists while they were in the field . Artists used blood , fat , whitened clay , bird feathers , charcoal as pigments .
Guide believes that some of the paintings could be 8,000 years old . Scientists : Figures were created by the Bushmen while they were in trance states . Artists used blood , fat , whitened clay , bird droppings , charcoal as pigments .