Guide said that some of the paintings could be 8,000 years old . Scientists : The paintings stretch in a long gallery across the rock face that extends for at least 30 meters under the stone roof . Figures were created by the scientists while they were in the field . Artists used blood , fat , whitened clay , bird feathers , charcoal as pigments .
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 .