Deer Valley Petroglyph Preserve in Phoenix protects 47 acres of desert and one of the region’s largest concentrations of ancient rock art, with more than 1,500 petroglyphs carved on basalt boulders. Associated with Hohokam, Patayan, and Archaic traditions and dating from about 500 to 5,000 years ago, the site also preserves evidence of repeated short-term use, including toolmaking, habitation, cooking, agriculture, and water management. Archaeological work in 1980 showed that travelers likely stopped here for temporary stays, tool production, and ritual activity. The preserve offers rare visual evidence of cultural and religious practices in the Phoenix Basin and remains an active center for research and public archaeology.