Arc of Appalachia — Public Lands Institute

Geological age: ~485–420 million years ago (bedrock)
Epoch: Ordovician and Silurian periods; limestone and dolomite deposited in shallow Iapetus Ocean; terrain never covered by Pleistocene glaciation — landscape continuity extending back millions of years
Taxa: 443 plants, 462 insects, 74 fungi, 15 amphibians
Native lands: Shawnee (Shawanwaki) · Adena and Hopewell mound-building cultures; unglaciated Adams County at southern edge of Shawnee territory; proximity to Serpent Mound (Adena/Fort Ancient, ~300 BCE–1200 CE)
Ecology: One of the most biodiverse landscapes in Ohio; 114 rare or endangered species; dry limestone prairie (Lynx Prairie); eastern red cedar savanna; unglaciated forest; relict Appalachian flora
Hydrology: Brush Creek watershed; Rocky Fork Creek; numerous limestone seeps and springs; Serpent Mound crypto-explosion structure (nearby)
Acreage: 7,000+ acres across preserve system
Conservation: Private nature preserve system; National Natural Landmark (Lynx Prairie, Buzzardroost Rock, Red Rock, and Wilderness units)
Endangered species: Indiana bat
GPS: 38.8200° N, 83.5400° W