Hell Run Natural Bridge, Lawrence County, Pennsylvania
Photo by Jay Wilbur
NABSQNO 17T-565420-4530870. Hell Run Natural Bridge is a waterfall natural bridge eroded through Vanport limestone by a spring that drains into Hell Run, also known as Hells Hollow. It is located in McConnells Mill State Park, about 5 miles west of Portersville, Lawrence County, Pennsylvania. Access is via the Slippery Rock Gorge Trail which crosses over the arch. Two other similar but smaller waterfall natural bridges are also found along this trail. Hell Run Natural Bridge has a span of about 10 feet. More information can be found at this park interpretive site.