National Forest Development Road 4635 is a hiking, biking, and horse trail in Wallowa County, Oregon. It is within Wallowa-Whitman National Forest. It is 3.9 miles long and begins at 4,442 feet altitude. Traveling the entire trail is 7.7 miles with a total elevation gain of 1,390 feet. The Muddy Reservoir (elevation 4,360 feet) reservoir can be seen along the trail.
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