Forest Service 545a Road is a hiking, biking, and horse trail in Coconino County, Arizona. It is within Coconino National Forest and Sunset Crater Volcano National Monument. It is 4.5 miles long and begins at 6,922 feet altitude. Traveling the entire trail is 9.1 miles with a total elevation gain of 1,520 feet. The Lava Flow Trail attraction is near the trailhead.
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