Lewis and Clark Caverns State Park, located near Whitehall in southwestern Montana, is home to one of the largest known limestone caverns in the Northwest. Spanning 3,015 acres along the Jefferson River corridor at 4,300 feet elevation, this Montana state park offers a memorable basecamp for RV travelers and outdoor enthusiasts alike. The campground features 40 sites with full RV hookups including 30-amp and 50-amp electrical connections, water hookups, showers, flush toilets, and an RV dump station. Pull-through sites and big-rig-friendly accommodations make it accessible for all RV sizes, and pets are welcome. Picnic tables, grills, and firewood add to the comfort of each stay. The park's crown jewel is its guided cave tours, with options ranging from the family-friendly Paradise Tour to the more challenging Classic Cave Tour, which involves over 300 feet of elevation gain and 500 stair descents. Above ground, visitors can hike scenic trails, fish the Jefferson River, watch wildlife, and explore interpretive displays at the visitor center. An amphitheater, gift shop, and food concessions round out the experience. Lewis and Clark Caverns State Park is an exceptional destination in Montana's Jefferson Valley.