Johnson's Shut-Ins State Park — Public Lands Institute

Geological age: ~1.47 billion years ago (bedrock)
Epoch: Proterozoic eon; Rhyacian period; St. Francois Mountains rhyolite and granite among the oldest exposed rock in Missouri; river incision Quaternary
Taxa: 297 plants, 57 birds, 212 insects, 7 mammals, 47 fungi, 24 reptiles, 10 amphibians, 20 arachnids
Most observed: Prairie Lizard (Sceloporus consobrinus)
fire pink (Silene virginica)
woodland stonecrop (Sedum ternatum)
Common Watersnake (Nerodia sipedon)
Blanchard's Cricket Frog (Acris blanchardi)
Native lands: Osage Nation (Wazhazhe) · earlier Paleo-Indian peoples; Osage hunted throughout the St. Francois Mountains; ceded territory via 1808 treaty under duress
Ecology: Ozark Highland; dolomite glades; dry chert woodland; rare endemic species in igneous glade communities
Hydrology: East Fork Black River; Taum Sauk Reservoir (upstream); shut-in pools and cascades; 2005 reservoir breach reshaped lower park terrain
Acreage: 8,916 acres
Conservation: Missouri State Park; Missouri State Natural Areas (Johnson's Shut-Ins Natural Area, Johnson's Shut-Ins Dolomite Glade Natural Area, Johnson's Shut-Ins Fen Natural Area); Missouri Wild Areas (East Fork Wild Area, Goggins Mountain Wild Area)
Endangered species: none documented
GPS: 37.5530° N, 90.8480° W