National Forest Development Road 112 is a hiking, biking, and horse trail in Lemhi County, Idaho. It is within Salmon-Challis National Forest. It is 14.0 miles long and begins at 5,917 feet altitude. Traveling the entire trail is 28.2 miles with a total elevation gain of 6,159 feet. Middle Fork Peak (elevation 8,980 feet) can be seen along the trail.
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