National Forest Development Road 175 is a hiking, biking, and horse trail in Elko County, Nevada. It is within Humboldt-Toiyabe National Forest. It is three miles long and begins at 6,111 feet altitude. Traveling the entire trail is 6.0 miles with a total elevation gain of 1,703 feet. The Idaho Nevada Shaft (elevation 6,207 feet) quarry can be seen along the trail.
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