Trigo Mountain Wilderness
The Trigo Mountains Wilderness is located about 25 miles north of Yuma, Arizona, in La Paz County.
From Yuma, travel north along Highway 95 to the Martinez Lake Road. Travel west on Martinez Lake Road to the Imperial National Wildlife Refuge. Travel northwest on Red Cloud Mine Road to Red Cloud Wash. Roads near the wilderness include Cibola Road, Hart Mine Wash Road, and Lopez Wash Road. High-clearance or four-wheel-drive vehicles are recommended for access to the wilderness boundary.