Forest Service Road 257a is a hiking, biking, and horse trail in Montezuma County, Colorado. It is within San Juan National Forest. It is 2.5 miles long and begins at 7,604 feet altitude. Traveling the entire trail is 0.8 miles with a total elevation gain of 90 feet. The Colt Reservoir (elevation 7,887 feet) reservoir can be seen along the trail.
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