Please register or login . To the east lies Yuma Military Proving Ground. A road divides the area into northern and southern sections. Here you'll find 14 miles of the Trigo Mountain ridgeline cut by Red Cloud Wash in the south, Chip Wash in the center and Hart Mine Wash in the north. Characteristic sawtoothed ridges with steep-sided canyons are further dissected by numerous washes.
Water usually seeps to the surface in several springs.
Extended horsepacking and backpacking trips attract a few human visitors who typically travel the washes and who typically see a diversity of wildlife such as the bighorn sheep, mule deer, gray foxes, coyotes, or ringtail cats wandering back and forth to the Colorado River. Rock climbers also visit the Trigo Mountains. Four wheel drive vehicles are recommended. Fall to spring. Click here to find out how.