Located in southeastern Ohio, Hocking Hills State Park has received national and international acclaim as a top park to visit. Stunning in every season, visitors can look forward to views of wildflowers adorning the forest floor in springtime and vivid foliage in the fall. The park features towering cliffs, waterfalls and deep, hemlock-shaded gorges for hikers and nature lovers to enjoy and serve as a backdrop to popular facilities and accommodations.The natural history of this region is as fascinating as it is beautiful. Here, in these sandstones, visitors can read Ohio's history from the rocks. The scenic features of the seven areas of the Hocking Hills State Park complex are carved in the Black Hand Sandstone. This bedrock was deposited more than 350 million years ago as a delta in the warm shallow sea, which covered Ohio at that time. Millions of years of uplift and stream erosion created the awesome beauty we see today.The sandstone varies in composition and hardness from a softer, loosely cemented middle zone to harder top and bottom layers. The recess caves at Ash Cave, Old Man's Cave, Whispering Cave and Cantwell Cliff are all carved in the softer middle zone.Weathering and erosion widened cracks found in the middle layer of sandstone at the Rock House to create that unusual formation.