The most popular of all the Hocking areas is Old Man's Cave, located on State Route 664. Here at the Upper Falls, the Grandma Gatewood Trail begins its six-mile course connecting three of the park's areas: Old Man's Cave to Cedar Falls to Ash Cave. This same trail has been designated as part of Ohio's Buckeye Trail as well as part of two national systems - the North Country Scenic Trail and America's Discovery Trail.