Painted Rock Mountains The Gila River crosses all of southern Arizona from southwest New Mexico, and is the drainage for about 1/2 of Arizona (the south). The highest elevation in the mountains is "unnamed" at , and is located at the central & east region of the range. (The range has many northwest-by-southeast ridgelines.) Painted Rock Mountains The Painted Rocks Mountains are a short 15-mile (24 km) long mountain range of the north-central Sonoran Desert southwest of Phoenix, Arizona and in southwest Maricopa County. The Gila River flows through the central-north end of the range. The famous Painted Rock Petroglyph Site lies at
Anza-Borrego Desert State Park Anza-Borrego Desert State Park Anza-Borrego Desert State Park (ABDSP) is a California state park located within the Colorado Desert of southern California, United States. The park takes its name from 18th century Spanish explorer Juan Bautista de Anza and "borrego", the Spanish word for sheep. With 600,000 acres (240,000 ha) that includes one-fifth of San Diego County, ABDSP is the largest state park in California and, the second largest in the contiguous United States. The park occupies eastern San Diego County and reaches into Imperial and Riverside counties, enveloping two communities: Borrego Springs, which is home to the park's headquarters,