To reach the farthest chamber of Lascaux, it's likely a man had to snuff out his light, lower himself down a shaft with a rope made of twisted fibers, and then rekindle his lamp in the dark so as to draw the woolly rhinoceros, the half horse, and the raging bison there. A long spear transfixes that bison, and entrails pour from its side. Beneath its front hooves lies the one painted man in all of Lascaux: prone, spindly wounded, disguised behind a bird mask. And below him, until its discovery in 196o, lay a spoon-shaped lamp carved of red sandstone ... Hold it again as it once was held, and the animals will emerge out of darkness as you pass. Nothing stays still. Shadows nestle in the cavities; a flicker of light across pale protruding rock turns a hoof or raises a head. One shape recedes as another emerges, and everything lingers in the imagination.