Tonopah Desert Tonopah Desert The Tonopah Desert is a small desert plains region of the Sonoran Desert, located west of Phoenix, Arizona. It is adjacent north of Interstate 10 and lies at the southwest intersection of the Hassayampa River with the Gila River. The Tonopah Desert is also just north of the Gila Bend Mountains massif which create the Gila Bend of the river. The Tonopah Desert is adjacent northwest of the small Palo Verde Hills on Centennial Wash. The Tonopah Desert is mostly east-west trending, small, approximately 30 mi long, and lies at the plains of low elevation mountains north; the
Arthur B. Ripley Desert Woodland State Park Arthur B. Ripley Desert Woodland State Park Arthur B. Ripley Desert Woodland State Park is a state park in the western Antelope Valley in Southern California. The park protects mature stands of Joshua trees ("Yucca brevifolia") and California juniper trees ("Juniperus californica") in their western Mojave Desert habitat. The park is located in northern Los Angeles County, west of downtown Lancaster and about from the Antelope Valley California Poppy Reserve. The site was donated to the state by Arthur "Archie" Ripley, and preserves a remnant of Joshua/juniper woodland which once grew in great abundance throughout the valley. Today only remnant