This wilderness of 25,517 acres sits on the eastern slopes of the Bradshaw Mountains and is characterized by extremely rugged topography with prominent granite peaks that overlook the Agua Fria River. Elevations range from 2,800 and 7,000 feet. The primary vegetation at the lower elevations is saguaro cactus, palo verde, and mesquite. As the elevation increases, grassland species change into the chaparral community and the highest elevations have ponderosa pine, Arizona whiteoak, and alligator juniper. Castle Creek Wilderness on Wilderness.net The USFS Wilderness Stewardship brochure explains more about designated Wilderness and how you can become involved in helping care for this precious resource.