Large octavo size [16x24cm approx]. Very Good condition in Very Good Dustjacket. DJ protected in purpose-made plastic sleeve. A nice copy. Dustjacket front and rear flaps creased. Illustrated with colour plates and Black & White Photographs and Drawings. xv, 270 pages Suggest a new hypothesis which sees cave art as part of ritual designed to reduce conflict among pre-historic hunter-gatherers as well as having a mnemonic function in the transmission of unwritten knowledge from one group or generation to another.