Forest Service Road 4081 is a hiking, biking, and horse trail in Sierra County and Catron County, New Mexico. It is within Gila National Forest. It is 1.7 miles long and begins at 7,197 feet altitude. Traveling the entire trail is 2.7 miles with a total elevation gain of 890 feet. The Great Republic (elevation 7,136 feet), Republic Mine (elevation 7,110 feet), Minnehaha Mine (elevation 7,208 feet), Black Mountain (elevation 7,221 feet), Republic Mine (elevation 7,110 feet), and Minnehoha Mine (elevation 7,162 feet) quarries can be seen along the trail.