F R 043 is a hiking, biking, and horse trail in Lemhi County, Idaho. It is within Salmon-Challis National Forest. It is 4.4 miles long and begins at 7,016 feet altitude. Traveling the entire trail is 8.8 miles with a total elevation gain of 1,864 feet. The Nabob Mine (elevation 7,014 feet) quarry can be seen along the trail.
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