(Ohio)
John Bryan State Park, in Greene County, Ohio, is a state park, of 752-acre (304 ha). It surrounds Clifton Gorge, a deep cut of the Little Miami River, between Yellow Springs and Clifton. The park contains a campground, and hiking and biking trails. The park also abuts the Clifton Gorge State Nature Preserve and Glen Helen Nature Preserve. (Ref: https://en.wikipedia.org/wiki/John_Bryan_State_Park)