Bureau of Land Management, New Mexico.
The Mount Riley Wilderness Area is located in southern New Mexico approximately 30 miles southwest of Las Cruces. The Wilderness Area is comprised of three volcanic cinder cones approximately 1,500 feet high. Vegetation consists of desert grasses and shrubs. There are no maintained trails to the summits; however, hikers are rewarded with 360 degree views from the top.
From I-10, about 8 miles south of Anthony, NM (at the TX state line), take exit #8 to TX 178/Artcraft Rd. After exiting, take the second right onto TX 178/Artcraft Rd and drive about 9 miles to NM 9/Columbus Rd (Note: TX-178 becomes NM-136 at the state line). Turn right and drive west about 24 miles on NM Hwy 9 to County Road 005. Turn right and drive north approximately 4.5 miles to County Road 007. Turn Right on County Road 007. This road forms the boundary of the WSA (which is on the left) for approximately 6 miles.