For example, Keith Haring, in the early 1980ís is an experiment in wall marking. His Subway Drawing, 1983, is literally a drawing upon a blank sheet of black paper (empty advertising space) within New York Cityís subway system. He would ride the subways for hours, waiting for a station where there was blank wall space.

He would jump out of the subway car, take a stick of white chalk out of his pocket, and quickly scribble the picture upon the wall. In effect, he placed his mark upon public property. In a city where many people are anonymous, he made a recognizable mark. So while Haring has much in common with the Paleolithic artist in his need to create and communicate to an audience, his images and motivations clearly differ.