National Forest Development Road 506 is a hiking, biking, and horse trail in Idaho and Montana. It is within Lolo National Forest and Idaho Panhandle National Forests. It is 4.0 miles long and begins at 3,228 feet altitude. Traveling the entire trail is 8.0 miles with a total elevation gain of 2,112 feet. Roland Summit (elevation 4,459 feet) can be seen along the trail.
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