Handprints from Cueva de las Manos (Cave of the Hands) in Argentina, ca. 8000 B.C.E. These handprints, made by blowing paint made from red ochre around the hand through a bone pipe, are from different individuals. All are slightly smaller than adult hands, so they were most likely made by adolescents. Most are left hands, which indicates that even in the Paleolithic, most people were right-