Why These Rules Matter
ATM Cave contains irreplaceable Maya artifacts and ceremonial remains.
Strict conservation rules ensure this site remains protected for future generations.
Visitor Requirements
Access to Actun Tunichil Muknal Cave is strictly regulated by the Institute of Archaeology.
Mandatory visitor information is required before any tour is confirmed.
Full legal name is required for official cave entry permits and park records.
Date of birth is required to verify eligibility for the ATM Cave tour.
Nationality is required for archaeological site monitoring and reporting.
Valid contact details are required for confirmations and safety communication.
Required Safety Gear
ATM Cave is an active archaeological site that requires specific safety equipment.
All gear is mandatory and checked before entering the cave system.
This ensures visitor safety while protecting fragile cave formations.
Guests without required gear cannot enter the cave.
Helmet & Headlamp
Protects against low ceilings and provides essential cave visibility.
Closed-Toe Water Shoes
Required for traction on wet rock surfaces and stream crossings.
Life Jacket / Flotation Device
Used during deeper swimming sections inside the cave.​
No Phones or Cameras
Electronics are prohibited to protect archaeological artifacts.
Rules & Restrictions
ATM Cave is a protected archaeological and natural heritage site.
All visitors must follow official regulations to preserve its cultural and environmental integrity.
Artifact Protection
Touching artifacts, skeletal remains, or cave formations is strictly prohibited.
No Electronics
Phones, cameras, and electronic devices are prohibited inside the cave.
No Physical Contact
Sitting, leaning, or placing objects on cave features is not permitted.
Guide Instructions
Visitors must follow the guide’s instructions at all times inside the site.
No Food or Drink
Food, drinks, gum, and smoking are not allowed inside the cave.
Site Preservation
All actions must support the long-term conservation of ATM Cave.
Physical Fitness & Activity Level
The ATM Cave tour involves moderate physical activity throughout the day.
Guests should be comfortable with hiking, swimming, and light climbing.
This is an adventure tour, not a passive sightseeing experience.
Jungle Trail Hike
The hike takes approximately 45–60 minutes and includes uneven terrain, river crossings, and tropical jungle conditions.
Swimming Sections
Multiple short swims take place inside the cave using provided flotation devices.
Cave Climbing & Navigation
Includes low-impact climbing and narrow passages requiring balance and coordination.
Conservation Protocols
Actun Tunichil Muknal Cave is preserved under national heritage protection laws.
All access is regulated to minimize environmental and archaeological impact.
Controlled Pathways
Walking routes are managed to prevent damage to cave surfaces.
Managed Group Movement
Group movement is controlled to reduce contact with cave features.
Approved Lighting Only
Only guide approved headlamps are permitted inside the cave.
Leave No Trace
All waste, including organic material, must remain outside the cave.
Guide Authority
Licensed guides are legally responsible for visitor conduct inside ATM Cave.
Failure to comply with instructions may result in immediate removal from the site.
Entry Denial
Guides may deny entry if requirements or rules are not met.
Tour Cancellation
Non-compliance may result in tour cancellation without refund.
Official Reporting
Serious violations may be reported to the Institute of Archaeology.