Lewis and Clark Caverns State Park

Lewis and Clark Caverns State Park is a 3,000-acre public recreation and nature preservation area located twelve miles east of Whitehall in Jefferson County, Montana. The state park includes two visitor centers, ten miles of hiking trails, a campground, and its namesake limestone caverns. The Lewis and Clark Caverns Historic District was placed on the National Register of Historic Places in 2018.

Source: Wikipedia