Lewis and Clark Caverns State Park

Lewis and Clark Caverns State Park is a 3,015-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 park features one of the most highly decorated limestone caverns in North America, with guided tours available. The park also offers camping, hiking, biking, and interpretive programs. The caverns were formed by layers of calcium-rich organisms that died in a sea that was present around 325 and 365 million years ago. The caverns are also notable in that much of the work done to make the cave system accessible to tourists was performed by the New Deal-era Civilian Conservation Corps