Nf-W4 is a hiking, biking, and horse trail in Coconino County, Arizona. It is within Kaibab National Forest. It is 1.9 miles long and begins at 6,602 feet altitude. Traveling the entire trail is 3.9 miles with a total elevation gain of 144 feet. The Summit Valley Wildlife Apron (elevation 6,562 feet) reservoir can be seen along the trail.
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