An outcrop of the Black Hand Sandstone Member of the Cuyahoga Formation that forms Ash Cave at Hocking Hills State Park, Hocking County, Ohio. Ash Cave is the most impressive in size of the many rock shelter caves in the Hocking Hills State Park area. The reentrant is 100 feet deep and 500 feet long. The rim is about 90 feet above the valley floor. A small waterfall flows along a small joint in the rim of the rock shelter and forms a well-developed plunge pool. Much of the margin of Ash Cave is formed by a large joint that follows the valley formed by a tributary of the East Fork of Queer Creek. Bedrock is from the Mississippian Geologic Period. The photograph was taken by Ralph J. Bernhagen in 1966.