Last Updated on October 27, 2026 by Melissa
Three U.S. national parks are named for what’s underground: Mammoth Cave, Carlsbad Caverns, and Wind Cave. Together they cover the world’s longest known cave system (more than 426 miles), one of the largest underground chambers in North America, and the world’s best examples of a rare formation called boxwork. Several other park units, including Great Basin, Sequoia, and Jewel Cave, have tours just as good.
Cave national parks are also some of the best year-round trips in the park system. The temperature underground barely changes between seasons, so a cave tour works in January as well as July. This guide compares the best cave national parks: what makes each one different, which tours to book, current prices and reservation rules, and the 2026 closures to plan around.
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Table of Contents
Cave National Parks Compared
| Park | State | Known length | Cost to go in the cave | Tours | Best for |
|---|---|---|---|---|---|
| Mammoth Cave | KY | 426+ miles | Tours about $12–$79 (no park entrance fee) | Mostly ranger-led, many options | Variety and history |
| Carlsbad Caverns | NM | Big Room is about 8 acres | $15/person (16+) + $1 timed entry | Self-guided only right now | Huge decorated rooms |
| Wind Cave | SD | About 168 miles | Tours $6–$45 (no park entrance fee) | Ranger-led | Boxwork, plus bison on the surface |
| Lehman Caves (Great Basin) | NV | About 2 miles | Tours about $12–$15 (no park entrance fee) | Ranger-led | Shield formations, small groups |
| Jewel Cave | SD | About 220 miles | Tours $6–$45 (no monument entrance fee) | Ranger-led | Pairing with Wind Cave |
| Crystal Cave (Sequoia) | CA | About 3 miles | Park entrance fee + tour ticket | Closed until 2027 | Marble cave in the sequoias |
The NPS counts more than 80 park units with caves, and more than 3,900 caves systemwide. These are the ones with regular public tours that are worth planning a trip around.
We’ve toured Mammoth Cave, Carlsbad Caverns, and Wind Cave. Carlsbad was our favorite because it’s self-guided, so you can take your time in the Big Room instead of keeping pace with a tour group. Mammoth was a close second, and walking even a small part of a cave that runs for more than 426 miles is something else.
Mammoth Cave National Park (Kentucky)
Mammoth Cave is the longest known cave system in the world, with more than 426 miles surveyed and more being mapped. It’s mostly long, dry limestone passages rather than heavily decorated rooms. The appeal is scale and history: miners, early guides, and 19th-century tourists left their marks here.
Entrance fee: None. You pay only for tours.
Best tours (2026 adult prices, per the NPS):
- Historic Tour: 2 hours, 2 miles, 540 stairs. About $24. Includes the Bottomless Pit and the tight squeeze at Fat Man’s Misery. It’s the classic first tour.
- Frozen Niagara Tour: 1.25 hours, 0.25 miles. About $26. The easiest tour, through the cave’s most decorated section, with flowstone and dripstone. Best for kids and anyone with limited mobility.
- Domes and Dripstones Tour: 2 hours, 0.75 miles, 638 stairs. About $30. Combines tall vertical shafts with Frozen Niagara’s formations.
- Grand Avenue Tour: About $42. The longest standard tour, for people who want a half day underground.
- Wild Cave Tour: About $79, ages 16 and up. Crawling, climbing, and helmets with headlamps.
Reservations: Book on Recreation.gov or by phone at 877-444-6777. The NPS “strongly recommends” reserving, because walk-up tickets aren’t guaranteed, especially on summer and holiday weekends. Senior and Access pass holders get 50% off tours.
Above ground: About 80 miles of hiking and biking trails, plus paddling on the Green and Nolin Rivers.
Where to stay: The Lodge at Mammoth Cave is inside the park. Cave City is about 15 minutes away and has the most hotels.
Carlsbad Caverns National Park (New Mexico)
Carlsbad Caverns is the most dramatic cave in the park system. Sulfuric acid, not water alone, carved its passages, and the result is enormous chambers filled with stalactites, stalagmites, and columns. The Big Room alone covers about eight acres.
Entrance fee: $15 per person for ages 16 and up; under 16 is free. The America the Beautiful Pass covers it.
Timed entry: A $1 timed-entry reservation is required to enter the cavern. Book on Recreation.gov or by calling 877-444-6777. It sets your entry time only; you pay the $15 entrance fee on arrival.
What you can do right now: All ranger-guided tours, including King’s Palace, Lower Cave, and Slaughter Canyon, are suspended until further notice. The two self-guided routes are open:
- Natural Entrance Trail: 1.25 miles of steep, paved switchbacks from the cave mouth down to the Big Room. It’s the best way to feel the scale of the cave.
- Big Room Trail: A 1.25-mile loop through the main chamber, with shortcuts for a shorter walk.
Most visitors walk down the Natural Entrance and ride the elevator back up. Expect long elevator lines on summer weekends and holidays. The elevators have had outages before, so check the park’s alerts the day before.
Bat Flight Program: Every evening from late May through October, hundreds of thousands of Brazilian free-tailed bats spiral out of the Natural Entrance at dusk. Electronics, including phones, aren’t allowed.
Other closures: Walnut Canyon Desert Drive has been closed since 2022 flood damage. Several surface trails, including the Guadalupe Ridge Trail, are also closed.
We visited in spring and hiked down through the Natural Entrance, and if you’re able to do the walk, it’s a must. Going in on foot shows you the scale of the cave in a way the elevator can’t. Our trip was too early for the bat flights, which is why watching them is still on our bucket list.
Where to stay: The town of Carlsbad is about 35 minutes away. The cavern is closed on Thanksgiving, Christmas, and New Year’s Day.
Wind Cave National Park (South Dakota)
Wind Cave was the first cave in the world protected as a national park, in 1903. It’s best known for boxwork, thin blades of calcite that form a honeycomb pattern on the ceilings and walls. Most of the world’s known boxwork is found here. At about 168 miles, it ranks among the longest caves in the world, and surveyors keep finding more.
Entrance fee: None. Tours are ticketed.
Tours (approximate adult prices):
- Garden of Eden: 1 hour, about 1/4 mile, 150 stairs. About $14. The easiest option.
- Natural Entrance: 1 hour 15 minutes, about 2/3 mile, 300 stairs. About $16. Starts near the small natural opening that “breathes” air in and out.
- Fairgrounds: 1.5 hours, 450 stairs. About $16. The most varied tour, with boxwork plus popcorn and frostwork formations.
- Candlelight (summer only): 2 hours, ages 8+. About $16. Booked by phone.
- Wild Cave (summer only): Up to 4 hours, ages 16+. About $45. Booked by phone.
Reservations: The three standard tours are on Recreation.gov, from 120 days out until two days before. About half of each day’s tickets are held for same-day sale at the visitor center and often sell out soon after opening. Book Candlelight and Wild Cave tours by phone at 605-745-4600. Tours were paused twice in 2025 for elevator work and a power failure, so check alerts before you go.
Above ground: Wind Cave’s prairie is one of the best places in the Black Hills to see bison, elk, pronghorn, and prairie dogs. The Rankin Ridge Trail has the best views.
Where to stay: Hot Springs, SD is about 15 minutes south. Custer is a good base for both Wind Cave and Jewel Cave.
Related: How to See the Best of South Dakota — combine Wind Cave with Badlands, Custer State Park, and the Black Hills.
More National Park Caves Worth a Tour
Lehman Caves, Great Basin National Park (Nevada)
Lehman Caves is small but packed with formations, including more than 300 rare shield formations. Tours are ranger-led, hold 20 people, and run year-round. The 90-minute Grand Palace Tour is the one to book. Reserve on Recreation.gov two to four weeks ahead in summer; walk-up tickets go on sale when the visitor center opens and often sell out within an hour. The cave stays about 52°F. Everyone goes through mandatory white-nose syndrome screening before the tour.
Jewel Cave National Monument (South Dakota)
At about 220 miles, Jewel Cave is one of the five longest caves in the world. It’s named for the calcite crystals lining its walls. The 80-minute Scenic Tour ($16) is the main option. Summer adds a Historic Lantern Tour and Wild Caving. Book on Recreation.gov. Jewel Cave is about 45 minutes from Wind Cave, so you can tour both in one day.
Crystal Cave, Sequoia National Park (California)
Crystal Cave is a polished marble cave beneath the giant sequoias. It’s closed for road repairs and construction after the 2026 season and is expected to reopen in 2027. When it’s open, tickets are sold only through the Sequoia Parks Conservancy, not at the cave, usually starting in spring. July and August sell out.
Related: The Ultimate Guide to Sequoia National Park — what else to see while you’re in the park.
Lava Beds National Monument (California)
Lava Beds is the opposite of a guided tour. You explore lava tubes on your own with a free caving permit from the visitor center. Mushpot Cave is lit and paved; the rest require several light sources each. Some caves close seasonally to protect bats. Entry is $25 per vehicle.
Oregon Caves National Monument and Preserve (Oregon)
Oregon Caves is a marble cave in the Siskiyou Mountains, open by guided tour from spring through fall. The 90-minute Discovery Cave tour costs $20 for adults, and children must be at least 42 inches tall. It’s an easy detour on a Redwood or Crater Lake road trip.
Mammoth Cave vs. Carlsbad Caverns: Which Is Better?
They’re different kinds of caves, and the right one depends on what you want:
- Choose Carlsbad Caverns for huge rooms and dense formations, and if you want to explore at your own pace. The self-guided Natural Entrance and Big Room routes are the most impressive cave walks in the country, and you can add the summer bat flight.
- Choose Mammoth Cave for variety, history, and adventure. With a dozen or more tour types, from the easy Frozen Niagara to the crawl-heavy Wild Cave, it suits both families and serious cavers. It’s free to enter.
- Choose Wind Cave if you’re in the Black Hills or want something unusual. Boxwork and bison make it the best combined cave-and-wildlife park.
They are all worth visiting and unique so don’t feel like you should only plan a trip to one!
Tips for Visiting Cave National Parks
- Bring a jacket, even in summer. Caves stay cool year-round: about 56°F at Carlsbad, 52°F at Lehman Caves, and 49°F at Jewel Cave, per the NPS.
- Wear closed-toe shoes with grip. Cave trails are damp and often steep.
- Don’t wear gear from other caves. White-nose syndrome, a fungus that has killed millions of bats, spreads on clothing and shoes. Parks screen visitors, and Great Basin’s screening is mandatory. Clean or leave behind anything you’ve worn in another cave.
- Book ahead in summer and on holiday weekends, and check whether the park holds back same-day tickets.
- Check alerts the day before. Elevator outages, staffing shortages, and road repairs have all affected cave tours in the past two years.
- Visit in the off-season. Cave conditions don’t change with the weather above, and winter brings the smallest tour groups. Our guide to national parks in winter has more cold-season ideas.
- Don’t touch formations. Skin oils stop them from growing.
Cave National Parks FAQ
How many national parks have caves?
According to the NPS, more than 80 park units contain caves, and more than 3,900 caves are known across the system. Three national parks are named for their caves: Mammoth Cave, Carlsbad Caverns, and Wind Cave.What is the largest cave national park?
Mammoth Cave in Kentucky has the longest cave, at more than 426 miles of surveyed passage, the longest known cave system in the world. Carlsbad Caverns has the bigger individual rooms, including the roughly eight-acre Big Room.Do you need reservations for Carlsbad Caverns?
Yes. A $1 timed-entry reservation from Recreation.gov is required to enter the cavern, and you pay the $15 per-person entrance fee on arrival. Ranger-guided tours are suspended for now, so the self-guided routes are the only option.Which is better, Mammoth Cave or Carlsbad Caverns?
Carlsbad Caverns is better for dramatic formations and self-guided exploring. Mammoth Cave is better for variety, history, and adventure tours. For a single cave experience, most first-timers will be more impressed by Carlsbad’s Big Room.Can you visit cave national parks in winter?
Yes. Cave temperatures stay nearly the same year-round, and Mammoth Cave, Carlsbad Caverns, Wind Cave, and Lehman Caves all run tours in winter. Some seasonal tours, like Wind Cave’s Candlelight and Wild Cave tours, run only in summer.Are cave national parks free?
Mammoth Cave, Wind Cave, Great Basin, and Jewel Cave charge no entrance fee, but cave tours are ticketed. Carlsbad Caverns charges $15 per person ages 16 and up.Plan Your Cave National Park Trip
For a first cave trip, go to Carlsbad Caverns and walk in through the Natural Entrance. If you’ve done that, Mammoth Cave’s tour list could fill a long weekend, and Wind Cave plus Jewel Cave make a strong two-day Black Hills add-on. Whichever you choose, reserve your tour early and check the park’s alerts before you drive in.
