Hocking Hills State Park — Public Lands Institute

Geological age: ~330 million years ago (sandstone); caves and gorges carved ~14,000–18,000 years ago
Epoch: Mississippian period (Osagean–Meramecian); Black Hand sandstone deposited in deltaic system; recess caves and gorges formed by Pleistocene periglacial weathering and glacial meltwater during Wisconsin glaciation
Taxa: 649 plants, 1,582 insects, 428 fungi, 23 amphibians
Native lands: Shawnee (Shawanwaki) · Delaware (Lenape) · Wyandot (Wendat) · Adena (700 BCE–100 CE) · Hopewell (100 BCE–500 CE); 'Hockhocking' a Shawnee/Delaware place name; all tribes removed from Ohio by 1843
Ecology: Hemlock-dominated gorge; Canadian hemlock at southern range limit; rock shelter communities; old-growth hemlock remnants; high biodiversity microclimate
Hydrology: Old Man's Creek; Queer Creek; Cedar Fork; multiple seasonal waterfalls; cave seeps maintaining year-round moisture; Cedar Falls (50 ft wide)
Acreage: 2,356 acres (park); adjacent 9,267-acre Hocking State Forest
Conservation: Ohio State Park; Ohio State Nature Preserve (Conkle's Hollow State Nature Preserve, within park complex)
Endangered species: none documented
GPS: 39.4354° N, 82.5408° W