NPR's Alex Chadwick talks with photographer and explorer David Coulson about his adventures in the Sahara, discovering and preserving rock art, an ancient form of painting and engraving on stone. (6:09
Copyright 2001 NPR
NPR's Alex Chadwick talks with photographer and explorer David Coulson about his adventures in the Sahara, discovering and preserving rock art, an ancient form of painting and engraving on stone. (6:09
Copyright 2001 NPR