Petrified Forest Loop Trail is a hiking trail in Billings County, North Dakota. It is within Theodore Roosevelt National Park South Unit. It is 6.6 miles long and begins at 2,578 feet altitude. Traveling the entire trail is 6.7 miles with a total elevation gain of 1,189 feet. The Petrified Forest parking is near the trailhead. The Big Plateau (elevation 2,697 feet) heath can be seen along the trail.
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