F South Road 647 is a hiking, biking, and horse trail in Gila County, Arizona. It is within Tonto National Forest. It is 1.3 miles long and begins at 2,844 feet altitude. Traveling the entire trail is 2.5 miles with a total elevation gain of 287 feet. The Quartz Ledge Tank (elevation 2,799 feet) reservoir can be seen along the trail.
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