Lewis and Clark Caverns State Park

State: Montana. Type: state park in Jefferson County centered on a limestone cave system; Montana's first state park (established April 22, 1938, formally dedicated in 1941). Located off Montana Highway 2, between Whitehall and Three Forks. Caverns discovered in 1892 by local ranchers; briefly a national monument (1908-1937) before becoming a state park. Access to the caverns is by guided tour only, generally May through September, plus limited December candlelight tours.

Lewis and Clark Caverns State Park protects one of the largest known limestone cave systems in the Pacific Northwest region, set in the hills above the Jefferson River valley in southwestern Montana. Ranchers Tom Williams and Bert Pannel first noticed steam rising from the hillside in 1892, and Williams explored the caves more fully in 1898; the site was developed for early tourism around 1900 under the name "Limespur Cave." Recognizing its significance, President William Howard Taft designated it Lewis and Clark Cavern National Monument in 1908, but the federal government transferred it to Montana in the late 1930s after concluding it didn't meet the bar for national significance, and it became the state's first state park on April 22, 1938. The caverns themselves formed within Madison Limestone roughly 325 to 365 million years old, and today's roughly 3,015-acre park combines guided cave tours with camping, hiking and biking trails, and a visitor center at the cave entrance.

The park sits in Jefferson County in southwestern Montana, along Montana Highway 2 roughly midway between Whitehall (to the east) and Three Forks (to the west); sources place it in the range of about 12 to 19 miles from each town. It is about 45 miles west of Bozeman and within roughly 30-45 miles of the Butte (BTM) and Bozeman Yellowstone (BZN) airports. The park spans about 3,015 acres, with the visitor center and cave entrance at roughly 4,300 to 5,300 feet elevation.

Southwestern Montana has a semi-arid, four-season continental climate, with warm summers (often in the 80s Fahrenheit) and cold winters that regularly bring snow, particularly at the park's higher cave-entrance elevation. Inside the caverns themselves, temperatures stay cool and fairly constant year-round, so visitors on a cave tour should expect a noticeably cooler environment than the surface, regardless of the season.

May through September is the main season, when the visitor center keeps its longest hours (9 a.m.-4:30 p.m. daily) and both the Classic and Paradise cave tours run daily; this is also when camping is most available. A shoulder season (October-November) offers reduced hours and access, and a limited December candlelight tour is offered for visitors wanting a different experience. Guided tours require advance reservation during the busiest Memorial Day-Labor Day stretch, so booking ahead is recommended for a summer visit.

The caverns were first noticed in 1892 when local ranchers Tom Williams and Bert Pannel saw steam rising from a hillside while hunting; Williams returned to explore the cave system more thoroughly in 1898. Around 1900, developer Dan Morrison began promoting the site for tourism under the name "Limespur Cave," before a dispute between Morrison's mining claim and the Northern Pacific Railway helped push the site toward federal protection. President William Howard Taft designated it Lewis and Clark Cavern National Monument on May 11, 1908 (with a formal survey completed by 1911), making it one of the earlier cave-focused national monuments in the country. The federal government transferred the site to the State of Montana in 1937 after determining it didn't meet the standard for continued national significance, and it became Montana's first state park on April 22, 1938, with a formal dedication ceremony in May 1941. During World War II, the Civilian Conservation Corps collected bat guano from the caves for use in TNT production, reflecting the site's varied historical uses beyond tourism.

The centerpiece activity is a guided cave tour: the Classic Tour covers about two miles over roughly two hours, gaining 300 feet in elevation with more than 100 stairs up and over 500 stairs down, while the shorter Paradise Tour covers about one mile in around an hour. A limited candlelight tour, offered in December, gives a different, lantern-lit experience of the caverns. Above ground, the park offers hiking and biking trails through the surrounding hills, along with camping, picnicking and wildlife viewing, including a summer colony of roughly 50-150 female Townsend's big-eared bats.

The cave system itself, with stalactites, stalagmites and other limestone formations built up over hundreds of thousands of years, is the park's main draw, explored only via guided tour. The visitor center at the upper plaza has exhibits, a café and gift shop. The park's campground and cabins, along with its trail network through the surrounding limestone hills, round out the above-ground offerings for visitors extending their stay.

The park sits directly on Montana Highway 2, reachable by car from either Whitehall or Three Forks, both a short drive off Interstate 90. The nearest airports are Bozeman Yellowstone International (BZN), roughly 35-45 miles east, and Butte, roughly 30 miles southwest; from either, a rental car is necessary to reach the park, since there is no public transit service to the site.

As of research, the visitor center is open daily 9 a.m.-4:30 p.m. from May through September, 10 a.m.-4 p.m. in October and November, and closed Mondays and Tuesdays from December through April. The park gate generally opens at 8:30 a.m., staying open until 5:30 p.m. most of the season and until 6:30 p.m. between Memorial Day and Labor Day. The road up to the upper visitor plaza closes for the season from October 1 through April 30. Confirm current hours on fwp.mt.gov before visiting.

As of research, general park entry was free for Montana residents and $8 per vehicle for non-residents. Guided cave tours are priced separately from park entry: the Classic and Paradise tours were listed around $15 for adults and $10 for youth ages 5-14, the December candlelight tour around $25 for adults and $15 for youth, and reduced educational-group rates were also available. Confirm current pricing on fwp.mt.gov, since rates and exact age brackets can change.

Plan for at least half a day: a Classic Tour alone runs about two hours, and most visitors add time for the visitor center, a short trail, or a picnic before or after. Overnight campers often stay one to two nights to combine a cave tour with the park's hiking and biking trails.

The park's own campground offers roughly 40 campsites, a hiker/biker tent site, and three cabins, making it possible to stay overnight within the park itself. Whitehall and Three Forks, the nearest towns on either side, have a small number of independent motels, while Bozeman, about 45 miles east, and Butte offer a much wider selection of hotel chains for visitors preferring a full-service town.

The park's visitor center includes an on-site café and gift shop for a quick meal near the cave entrance. Whitehall and Three Forks each have a small number of casual, local restaurants and diners. For a wider selection of dining, Bozeman (about 45 miles east) and Butte (about 30 miles southwest) are the nearest full-service towns.

Missouri Headwaters State Park, where the Jefferson, Madison and Gallatin rivers join to form the Missouri River, is roughly 30 minutes away near Three Forks. The historic mining city of Butte, with its own museums and Berkeley Pit overlook, is about 30 miles southwest. Bozeman, about 45 miles east, offers a fuller range of museums, dining and shopping for visitors extending their trip.

Bozeman Yellowstone International Airport (BZN), roughly 35-45 miles away, and Butte's Bert Mooney Airport, roughly 30 miles away, are the nearest airports with commercial service. There is no public transit to the park itself, so a personal or rental vehicle is necessary.

Cave tours involve over 100 stairs up and 500 stairs down on the Classic Tour, plus a 300-foot elevation gain, so visitors should be in reasonably good physical condition and wear sturdy, non-slip footwear; the cave interior is cool year-round, so a light jacket is worth carrying even in summer. Reservations are required for tours during the busiest summer stretch, so arriving without a booking can mean being turned away. For any emergency, dial 911; the park office can be reached at 406-287-3541.

A light jacket or fleece is useful for the cool, constant cave temperature, even on hot summer days outside. Sturdy, non-slip walking shoes are important given the tour's many stairs and uneven surfaces. Water and snacks are worth bringing for time spent above ground on the trails or at the picnic areas, since options at the on-site café are limited.

Book cave tour reservations in advance for a Memorial Day-Labor Day visit, since access is by guided tour only and popular time slots can fill. Arrive with enough time before your tour slot to explore the visitor center and short trails near the upper plaza. Combining a stop here with a visit to nearby Missouri Headwaters State Park makes for an easy, historically themed day trip in the same part of southwestern Montana.

Dial 911 for any emergency. The park office can be reached at 406-287-3541, and tour reservations can be made at 1-855-922-6768, per official park information.

Lewis & Clark Caverns State Park (Montana Fish, Wildlife & Parks) - https://fwp.mt.gov/stateparks/lewis-and-clark-caverns

This section is being updated and will be available shortly.

This section is being updated and will be available shortly.

This section is being updated and will be available shortly.