Hell's Hollow at Slippery Rock Gorge

Hell Run flows south into Slippery Rock Creek, and its last two miles or so are protected as part of McConnells Mill State Park (and it is considered to be part of the Slippery Rock Gorge Natural Area). To get to its parking area, go over the covered bridge by the mill, up the hill, and then follow the (small) signs for a couple of miles. Expect to make a number of turns along some skinny, hilly, winding back roads.

At the parking lot, you'll be faced with two trails - the 0.5 mile (easy) Hell's Hollow Trail and the 6.2 mile (moderate to difficult) Slippery Rock Gorge trail. I usually just plod along the easy trail, along which you'll find a number of geologic sites and wildflowers and scenic views of Hell Run. Some interesting points are the flume and (or course) the falls, which mark the end of the trail. The best time to see the falls is in the springtime during snowmelt, when they are at their fullest. By the end of the summer, especially a dry one, the falls will be down to a couple of trickling flows.