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9 hours
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Actun Tunichil Muknal is a mysterious and beautiful portal to the ancient Maya and their traditions, ceremonies and spirituality. This cave system served as a ceremonial site where the Maya performed sacrifices and other ceremonies as they dealt with extreme and harsh conditions in times of drought.
Explore this lush area surrounded by beautiful jungles, and the cave entrance is traversed by swimming across a crystal clear spring fed pool. Spend 3 hours in the cave after hiking in through the rain forest. Here you will see stunning artifacts, altars and the crystallized skeletons of the sacrificed girl, The Crystal Maiden.
Infants are required to sit on an adult’s lap
Not recommended for travelers with spinal injuries
Not recommended for pregnant travelers
Not recommended for travelers with poor cardiovascular health
Travelers should have at least a moderate level of physical fitness
Operates in all weather conditions, please dress appropriately
Cancellations only due to severe rain or flooding
Guests must wear appropriate (Closed toe) shoes for walking through jungle and water
Guests must bring a pair of socks for the dry chamber in the cave
Minimum height requirement is 40inches
Vegetarian meal option available upon request
Bring along a change of dry clothes to be worn after the tour. This is a wet tour.
Clothes to be worn for the tour needs to be modest to respect the cave. Clothing such as macaroni straps, bikini, shorts and sleeveless shirts for both male and females are not allowed.
Eco friendly bug repellent is optional (Apply only if needed)
No cameras/ electronics are allowed on the hike and/or on in the cave.
Bring along a water bottle. We will have water available to refill your bottles.
Have a good breakfast before the tour. Lunch will be late.
Tours are limited to 6 guests per guide. Larger groups (7+) will travel together while being assigned different guides.
Form of Identification (ID) is required at check-in
For a full refund, cancel at least 24 hours before the scheduled departure time.
Atm Cave Belize (actun Tunichil Muknal)
Taking a journey into the Maya underworld at Actun Tunichil Muknal (ATM) or the “Cave of the Stone Sepulchre” for one of the most enlightening, epic and unique experiences of your life. Leave the world of the living behind as you venture into the heart of the ATM Cave with your licensed guide. Recently deemed the #1 Sacred Cave destination in the world by National Geographic, the ATM cave is not only beautiful geologically with its crystalline stalactites and stalagmites, but also historically, as is a natural museum of ancient Maya artifacts, as well as a sacred burial place. This is the final resting place of “Crystal Maiden,” an ancient Maya ceremonial victim, as well as the remains of 13 other sacrificed men, women and children. Your professional guides have led government officials, National Geographic, Discovery Channel, The British High Commission and US Embassy officials into the ATM Cave. This sacrificial site is accessed by a 45 minute drive from our office in San Ignacio.
Here we enter the Tapir Mountain Nature Reserve and park our vehicles at the ranger post. From this point on we are on foot, hiking through the jungle for approximately 45 minutes to the entrance of the cave. To access the cave we swim across a small spring- fed pool and wade into the dark underworld of the cave that allows us access the extensive underground maze of tunnels, passageways and chambers, climaxing in the ceremonial chamber housing stoneware, ceramics, the famed crystallized skeleton of the “Crystal Maiden”. We spend approximately 3 hours in the cave at the guidance of our experienced guides. We enter back into the jungle world and hike to our vehicles where we relax and enjoy a homemade picnic lunch with water and soft drinks before driving back to San Ignacio. Difficulty level: Moderate (involved some easy swimming and life jackets are provided for non-swimmers, who will also be escorted by our highly trained guide).
Includes transportation to and from our office in San Ignacio
Explore the cave with an expert, specially licensed guide
Necessary equipment - Helmet, headlamps, Lifejackets
3-hour walking tour of cave system
Lunch with a drink
Hotel pickup and drop-off only if requested
Gratuities
Select a pickup point
Explore the Maya underworld, where the sounds of ancient bloodletting ceremonies still echo off the walls of the crystal Actun Tunichil Muknal Cave (ATM). As featured in National Geographic!
Pickup included
1,325 reviews
Total reviews and rating from Viator & Tripadvisor
Luke C,Mar 9, 2026
- Review from Viator
We really enjoyed our guide and the cave was great, but I wish we’d known the tour operator was such a large company. We rode on a bus with multiple other groups, which meant that after we were done and finished lunch, we had to wait over an hour for a slower group to finish before we could head back
919davef,Mar 9, 2026
- Review from Tripadvisor
We experienced the ATM with James. What a stallion of a human. James was like a compelling history professor, a patient therapist, and an experienced expedition leader. That is to say we learned the history and symbology of what we would see, we took an adventurous path but never felt imperiled, and we walked out with zero bumps and bruises. Every aspect of our experience reached our lofty expectations. Thanks!
nikkinoble,Mar 8, 2026
- Review from Viator
Adventurous & educating! Our guide Andy was awesome! So helpful & informative! We had a great day! Highly recommend!
R1262TOaarond,Mar 7, 2026
- Review from Tripadvisor
An amazing experience. My tour guide Huge was great at guiding us though the cave. One of the coolest experiences I’ve ever done. 10/10
W8621CUmaryd,Mar 7, 2026
- Review from Tripadvisor
This was one of those difficult but worthwhile experiences. I am not very coordinated, so climbing around the rocks in the caver was a challenge, but our guide, Francis, patiently helped me get through all the difficult bits. They are very concerned about safety. Both the cultural remains and the cave itself are very interesting. The picnic was also quite tasty.
anjavanb2026,Mar 7, 2026
- Review from Tripadvisor
We did the ATM tour and it was a great experience! Alex, our gide, is very enthusiastic and gives a lot of information. So glad we did this!
Isabelle D,Mar 6, 2026
- Review from Tripadvisor
Our guide nicknamed Junior was filled with information and enthusiastically passed on his knowledge throughout the tour. I highly recommend this activity that we did as a family with two teenagers aged 15 and 17. We all loved our experience!
laurakA4812EH,Mar 6, 2026
- Review from Tripadvisor
It was an amazing experience with motivated and funny guides who provided a lot of information and made sure that everyone enjoyed the tour. It was a pretty challenging cave but what you see there is simpley unique.
Darcynoel,Mar 5, 2026
- Review from Tripadvisor
Magdaleno Alex D and Kayme were all terrific! Magdaleno was our guide and he is super knowledgable, experienced, thoughtful and funny. His attention to details was impressive. If you are considering booking an ATM tour, you’ve found the best right here
MontfortOaks,Mar 4, 2026
- Review from Tripadvisor
Went out today with Alex snd had a great time. He was fun, engaging and provided good amount of info along the tour. The cave itself was impressive and felt sacred. Other staff were all good and professional. Kudos to everyone.
Operated by MayaWalk Tours