Murray Springs in southern Arizona, near the San Pedro River, preserves a Clovis hunting camp from about 11,000 years before present. Discovered in 1966 and excavated from 1967 to 1971, it yielded five buried animal kill and processing areas and a camp with hearths, projectile points, lithic tools, debitage, and a bone shaft straightener. Its remains include mammoth, bison, horses, camels, canids, and rodents, making it especially important for understanding Clovis hunting, butchering, and stone-working. Evidence also shows later visits, including activity around 1300 to 1450 CE, and research there has figured in debates over Pleistocene extinction.