Place to see: Falls of the Ohio State Park, Jeffersonville, Indiana, United States

Lewis and Clark shake hands

Lewis and Clark shake hands

The limestone base that Lewis and Clark stand on is 387,000,000 years old.

About this place:

Falls of the Ohio State Park is where a series of rapids formed by the relatively recent erosion of the Ohio River operating on 386 million-year-old Devonian hard limestone rock shelves.