National Forest Development Road 424 is a hiking, biking, and horse trail in Shoshone County, Idaho. It is within Idaho Panhandle National Forests. It is 11.3 miles long and begins at 2,201 feet altitude. Traveling the entire trail is 22.9 miles with a total elevation gain of 5,995 feet. The Snake Pit - Enaville Resort guest house can be seen along the trail. There is also a water along the trail.
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