#2 Old Man's Cave, Ohio
Old Man's Cave is located in Hocking Hills State Park, in the Hocking Hills region of Hocking County, Ohio. It's one of the most scenic hiking trails in the park and features 5 main areas: Upper Falls, Upper Gorge, Middle Falls, Lower Falls and Lower Gorge. Scattered across the trail are gorge and waterfalls that offer a unique look at the earth's subsurface.