This article discusses rock art which was the very first "art." Rock art, such as the images created on the stone surfaces of the caves of Lascaux and Altimira, is the true origin of the canvas, paintbrush, and painting media. For there, within caverns deep in the earth, the first artists mixed animal fat, urine, and saliva with powdered minerals to create paintings on rocks in black, white, and red. Many of these forms etched or painted on rocks and rock surfaces are strikingly abstract, while others are so realistic one would think they were created by a Baroque master. Lovely horses embedded in stone galloping in herds across the plains with bison superimposed over them produced intriguing palimpsests of the time when humans were first inspired to express beauty and aspirations, and to record events. These images, preserved for epochs, have been found all over the world, from the caves of Europe to the more recent Native American sites. In this article, the author offers some art-making ideas for students to learn the concepts of "pictograph" (painting, additive) and "petroglyph" (subtractive process). (Contains 3 online resources.)