Wyandotte Caves

The Wyandotte Caves is a pair of limestone caves located on the Ohio River in Harrison–Crawford State Forest in Crawford County, Indiana, 5 miles (8 km) northeast of Leavenworth and 12 miles (19 km) from Corydon. Wyandotte Caves were designated a National Natural Landmark in 1972, and they are now part of O'Bannon Woods State Park. The cave system is the fifth largest in the state of Indiana, and it is a popular tourist attraction. The term "Wyandotte Caves" is used to refer to Wyandotte Cave (sometimes called the "Historic Cave") and Little Wyandotte Cave (also called Siberts Cave and sometimes the "New Cave"), but while they are close geographically and owned and managed by the same entity, the two are very different from each other.

Cave data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).