You searched for: Language UND Remove constraint Language: UND Place Boston Mountain Ranger District Ozark National Forest, 4.3 miles south of the Mulberry River on Arkansas Highway 23 at the Pig Trail Scenic Byway Sign. Remove constraint Place: Boston Mountain Ranger District Ozark National Forest, 4.3 miles south of the Mulberry River on Arkansas Highway 23 at the Pig Trail Scenic Byway Sign.