Auteur: Sam Challis

David Lewis-Williams is Professor Emeritus and Senior Mentor in the Rock Art Research Institute, University of the Witwatersrand, Johannesburg. He is world-renowned for his lifetime”s work on ancient rock art. His many books include “Conceiving God: The Cognitive Origin and Evolution of Religion”, “Inside the Neolithic Mind: Consciousness, Cosmos and the Realm of the Gods” (with David Pearce), “The Mind in the Cave: Consciousness and the Origins of Art” and “The Shamans of Prehistory: Trance and Magic in the Painted Caves” (with Jean Clottes).Sam Challis is a rock art specialist at the Rock Art Research Institute, lecturing for the Department of Archaeology, University of the Witwatersrand, Johannesburg. He has a doctorate from Oxford University examining the impact of the horse on hunter-gatherers and on their rock art in southern Africa. He has also undertaken expeditions to find and publish Saharan rock art.