Cave painting is humanity's oldest surviving art, made from at least forty thousand years ago into the later Stone Age in caves from Europe to Sulawesi and Patagonia. Artists ground ochre, manganese and charcoal, applied it with fingers, brushes and blown pigment, and filled cave walls with animals in motion and stencilled handprints, often deep underground in chambers that show no sign of habitation. Some sites were used repeatedly across millennia, so images of different epochs layer over one another. The best known - Chauvet, Lascaux, Altamira, and Argentina's Cave of the Hands - display technical mastery and acute animal observation, and the tradition continued in Australia and elsewhere long after the European caves were sealed.