Just outside Düsseldorf, the Düssel River forms a valley, called the Neanderthal, where the bones of a Stone Age relative of modern man were found. The impressive museum, built at the site of discovery in the suburb of Mettmann, includes models of the original discovery, replicas of cave drawings, and life-size models of Neanderthal Man. Many scientists think he was a different species of human; short, stocky, and with a sloping forehead. The bones were found in 1856
by workers quarrying the limestone cliffs to get flux for blast furnaces.