Canyon walls overhang at the end of the Gorge Trail in Conkle's Hollow State Nature Preserve, near Logan, Ohio, USA. This hollow was named for W.J. Conkle who left his name and the date 1797 carved into the sandstone on the west wall of the gorge. Conkles Hollow is a state nature preserve operated by ODNR Division of Natural Areas and Preserves. The park contains numerous gorges, waterfalls, overhangs, and cliffs worn out of the picturesque Black Hand Sandstone, colored from orange to tan. The Black Hand Sandstone Member of the Cuyahoga Formation was deposited early in the Mississippian Period (359-318 million years ago). It underlies the Hocking Hills like a sandwich, with a hard top and bottom and a soft middle layer. Its geologic formation involved the ancient Appalachian Mountains to the east feeding rivers which deposited sand and gravel, which later become a coarse, sometimes conglomeratic quartz sandstone.
Add to Cart Add to Lightbox Download