In the early summer of 1994, my wife and I led sixteen public school art teachers into the rugged Sierra Madre Mountains of Chihuahua, Mexico. The goal was to learn the art of making pottery the way the Paquime Indians did hundreds of years earlier. We set up camp in a remote area known as Cave Valley; a narrow gorge lined on both sides with Indian cave dwellings and parted in the middle by the meandering Piedras Verdes River.