The South Mountains, located on the southern edge of the City of Phoenix, Arizona, have long been considered a sacred place to Native Americans. Numerous trails, many of which are associated with ancient rock art and broken pottery, lead from the base of the mountains into the upper reaches of the canyons. The presence of this rock art and associated artifacts indicates that the trails were created by the Hohokam people, an artistic and intelligent culture. The archaeology and rock art of the South Mountains are currently threatened because of development along the edge of the mountains. Some of the incredible rock art has been documented over the past four decades, but no comprehensive surveys have been undertaken. Consequently, the City of Phoenix collaborated with the School of Human Evolution and Social Change at Arizona State University to undertake a long-term program to survey and record rock art within its cultural and natural contexts.