On my travels through the Southwest I have been fascinated by the rock art imagery left by the ancients. Consisting of petroglyphs, elements that have been carved, pecked, rubbed or scratched into the surface of the rock and pictographs, elements that have been drawn, daubed, spattered or painted onto the rock using various natural pigments. They can be found in the walls of caves, canyons, on boulders, in bedrock and sometimes on the floors of caves.