- Highest falls in PA, only a few feet shorter than Niagra Falls. Short hike, boardwalk along 70%. Come early on weekends, wear comfy shoes.2nd highest waterfall in PA. Boardwalk trail, 2 waterfalls. Hemlock, rhododendron, birds, wildlife. Visitor center.300 acres, including 8 waterfalls and more than 2 miles of hiking trails, bridges, and walkways. Picnicking and grilling area, paddle boats, mini-golf, fishing.