Actun Tunichil Muknal Cave (ATM Cave) | The ATM Cave in Belize

Actun Tunichil Muknal Cave (ATM Cave) – All You Need to Know Before You Go

7 Epic Belize Adventure Tours

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The Actun Tunichil Muknal Cave

Even to the untrained eye, a peek inside a cave that was once home to an ancient civilization holds plenty of fascination. Rock walls. Strange ceiling and floor projectiles formed as water and minerals dripped and solidified for centuries. Spiders, bats and even fish coexist nicely, yet for the purist, no cavern is created equal—especially if that cave happens to be Belize’s Actun Tunichil Muknal Cave, otherwise known as the ATM Cave. This stronghold of ancient Mayan secrets and rituals will keep you spellbound from the moment you arrive.

Here are six things you should know before you go there to make your visit even more magical.

About Actun Tunichil Muknal Cave (ATM Cave)

Once your eyes are accustomed to varying shades of black to grey that fill the ATM’s interior and you turn on your helmet light, you’ll spot the interiors of chamber after chamber until you arrive at The Cathedral. The cave’s most dramatic finds are here, including calcified skeletal remains of “The Crystal Maiden” whose bones sparkle like jewels due to centuries of mineral buildup. She’s not alone. Scan shelves and nooks to discover bones, relics, pottery and other ancient treasures in the dark silence of this inner chamber.

Why you should visit the ATM Cave

The skulls, bones and pottery on display are distinguished by “kill holes” inflicted upon each so spirits lurking inside are released. After all, the Gods of the Underworld have lots to do and they can’t be loitering around lifeless objects. Seeing such a spectacle is the best way to grasp the primitive religious beliefs practiced by ancient Mayans who selected this cave as a primary sacrificial epicenter thousands of years ago. You’ll learn so much more about this hidden world by visiting rather than just reading about it.

Where to find the ATM Cave

Your journey begins in the Cayo District—specifically, the town of San Ignacio. You’ll need a guide to find your way, so check with the concierge at your resort or seek help in town. Once you’ve secured a guide, you’ll be driven to the banks of the Tapir Mountain Reserve, at which point, expect to hike about 45-minutes through jungle and streams to reach the entrance. It’s a tight fit and not for the claustrophobic, but once you reach your goal, the ATM Cave will reward you with sights and ambiance that has no equal.

The best time to visit the ATM Cave

Most of the year, but if you take your vacations over the summer months, this could be problematic. Between late June and August, river waters rise throughout Belize as a result of green season rains that replenish the land. Does this happen every summer? Of course not. But it’s important that you know that the cave is closed to visitors if the waters get too high, but if you schedule your tour for any morning between September and mid-June you won’t be disappointed.

Best way to get to the ATM Cave

The bumpy rural road that transects a section of the Belize River will be your first step in reaching the cave. National Geographic travel experts–who put this cave atop its “Sacred Places of a Lifetime” list–join other resources in suggesting travelers stretch before hiking into the jungle to begin the aquatic slog into the cave’s depths. You’ll get wet and stay damp during the four to six hours spent in ATM Cave, so bring dry clothing along and forget about wearing sandals.

The best way to experience the ATM cave

While the ancient Mayans referred to the ATM Cave as Xibalba, the place of fear, you needn’t worry because only skilled and well-trained licensed guides are permitted to accompany tourists into the cave. You will be provided a helmet outfitted with a light and as you view the cave’s contents, your guide will captivate you with tales of Mayan superstitions and practices. You might even be told that the Crystal Maiden may actually be the Crystal Dude since experts are still debating the gender question.

As one of the million tourists who visit ATM Cave each year, you’ll be asked to be cautious due to the fragile nature of the cave’s contents and to protect the cave’s integrity, no cameras are permitted. This is one experience you’ll remember forever, so prepare properly for your adventure so you remain comfortable and attuned to the atmosphere, and if you believe in ancient spirits, you’ll certainly want to be in top form!


Interested in visiting the ATM Cave on your Belize Vacation? Contact Untame Belize, a top-rated adventure travel company in Belize to book this tour.

See also:

The Complete Guide to the  ATM Cave

belize atm cave

Caverns and skeletons and mysteries, Oh, My! Experience an underworld you must see to believe.

Unless you’re an archaeology buff with a vested interest in Central American societies like the ancient Maya, you’ve probably never heard the name Dr. Jaime Awe. This homegrown archaeologist has become something of a legend in his homeland Belize, having been the first to seriously explore the Actun Tunichil Muknal (ATM) Cave in 1993.

Dr. Awe’s initial work so pleased the Belize government and authorities on primitive Mesoamerican societies, he was granted permission to helm the Western Belize Regional Cave Project between the years of 1993 and 2000. Today’s visitor can thank this archaeologist for the ground-breaking exploratory efforts he undertook at a sacred site that remains “a work in progress” to this day.

A short history of Actun Tunichil Muknal (ATM Cave)

Radio carbon dating and other scientific tools have enabled scientists to pinpoint the earliest use of this deep, hidden Belize cave to the Classic Period, 250 to 909 AD. Speculation is that at first, the Maya people were reticent to go into this dank, dark underworld and the earliest attempts at exploration were likely hazardous and dangerous beyond the mouth of the cave entrance.

But there is nothing speculative about the deep belief system that impelled the Maya people to visit this particular cave and its environs despite the difficulty and danger associated with entering. According to Michigan State University’s Anthropology Department, theirs was a polytheist belief system that gave deference to 165+ human-like gods, each of whom was born, grew up and died. ATM was sanctified as a portal to a sacred underworld where gods and men spent their afterlives.

Having proclaimed this cave their portal to the next life, the Maya people occupied it for hundreds of years—up until these people simply disappeared, due to migration, domination by explorers or far-fetched speculation that ran the gamut from weather-related disasters to extra-terrestrial intervention. Over time, the mouth of ATM was hidden by plant overgrowth, thus all of the precious contents brought to the cave over time remained in place for hundreds of years until the first archaeologists stumbled into this artifact-filled underworld and began to explore it.

What you’ll see inside the ATM Cave

Visitors who are familiar with the word “labyrinth” find themselves within an environment that contains so many intersecting inner chambers, they often feel dwarfed by the sheer magnitude and drama they encounter. In fact, it’s easy to get lost while gazing across each expansive chamber. Tight corridors and total darkness can feel intimidating, but visitors wear headlamps to glimpse all of the natural and man-made sights they encounter.

Formidable stalactites and stalagmites hang suspended from ceilings and pop up from bedrock that are so huge and stunning, even geologists stop in their tracks to admire their size and beauty. It took tens of thousands of years for these icicle-shaped, mineral-filled structures to form. Can you imagine how the first Maya explorers felt when they encountered these formidable shapes? They likely stood in awe of their surroundings and it’s likely why they assumed that they had found the portal to the underworld that verified their religious beliefs.

What took place within the ATM cave chambers

Having designated this underworld a sacred place, Maya priests set about establishing practices within cave chambers. The faithful brought with them all manner of ritual and everyday items to sustain and support ceremonies that took place within these walls. More than 1400 artifacts, dating between 250 and 909 AD, still remain in place for visitors to see, but not touch. Pottery, tools, water vessels, artifacts and weapons tell the tale of a highly-sophisticated society with deep religious beliefs, many of which are viewed as barbaric and cruel today.

Prayers and tributes offered to the gods ran the gamut from food offerings to hand-crafted religious symbols, each purposely chosen to appeal to the gods for a specific need or desire: rain, fertile fields, women’s fertility and relief from any natural disaster that happened to strike this area of Belize over the centuries. Archaeologists believe that vessels were ceremonially broken in reverence to gods and both animal and human sacrifices were offered on alters when priests deemed ritual killings were demanded by the gods.

About the skeletons in the ATM Cave

While many historians insist that the Stelae Chamber is of the utmost archaeological interest because these lofty stone structures are purported to tell stories of how and why important members of the society and priests went through their ceremonial practices—and in fact, this is the site supplicants came to cut themselves with obsidian blades to offer their blood to the gods—it’s the skeletal remains that tend to get the most amount of attention.

Within the protective embrace of the ATM’s main chamber are the skeletal remains of 14 people sacrificed to appease the gods, some of them children under the age of five. Why children? Because they are pure and innocent, thus especially pleasing to the gods. The most high-profile skeleton is “The Crystal Maiden,” a woman in her 20s whose body deteriorated so uniformly over time within this sealed chamber, every bone in her body became encased in calcite. Her name comes from the fact that any light source makes her encrusted bones glitter like crystal.

For sacrificial victims, death within the cave did not come easily. The Maiden appears to have been clubbed to death, according to scientific studies conducted on the cave’s skeletons. Other remains indicate the bodies were subjected to rituals that included drilling “kill holes” into heads during extended periods of sustained torture. Each gruesome practice was performed in accordance with strict Maya religious practices.

Beyond the skeletons of the ATM Cave

Not every nook and cranny of the cave’s vast expanse contains symbols of this society’s sacrificial acts. For example, a highlight of a tour of ATM is the famous “monkey pot” that features iconography that is found only in three other items that have been discovered by archaeologists. This image is highly symbolic and typical of the sophisticated carvings and renderings that showcase craftsmanship found throughout the cave.

While there is no evidence of the sophisticated written language this society developed over time, a visit to the cave frequently instills in visitors a desire to see additional caves in the area. Finally, tourists should know that there is a vibrant eco-system thriving within this cave system that includes bats, tropical fish, crabs, crayfish and other creatures that are sustained by the river waterway that flows throughout the cave.

How to get to ATM Cave

This vast cave complex is located very close to the town of San Ignacio in the Cayo District, which makes San Ignacio a popular jumping off point for tourists. To spend the day at the cave, ask your resort host to obtain tickets for you, or go directly to the main office of the Institute of Archeology in Belmopan, which also serves as a ticketing venue. A memorandum of understanding between the Institute and the Belize Audubon Society has been in effect since 2004, which is why this agency sells tickets.

If you haven’t booked a formal tour that includes transport to and from ATM, but you have reserved your tickets, you can rent a car or book a shuttle that takes you south of Teakettle Village to mile marker 52 on George Price Highway to reach the monument. Wear practical clothing, shoes designed for adventure and bring along sunscreen and bottled water. Getting into the cave requires wading through water, thus travelers often bring a change of clothing along.

Getting from your transport to the ATM cave

Once you arrive at the edge of the tropical forest adjacent to the 455-acre Tapir Mountain Nature Reserve, a skilled guide will orient you to the journey ahead, offering tips to keep you safe so you neither get hurt nor lose your way. You’ll hike through a tropical forest for around 45 minutes before you reach the Muknal stream. Time to wade into the water as you head toward the ATM cave opening that could be challenging for anyone who’s not physically fit.

The cave itself drops three miles down into the earth, but you will only be allowed to travel part of the way down for your safety, but not to worry. The first chambers you encounter won’t disappoint: You will enter a lost world via the hourglass-shaped opening that gives you access to the karstic limestone kingdom that exists just beyond the entrance. Prepare to be inspired.

Protocols to take seriously when visiting the ATM Cave

While the ATM Cave is one of the most popular tourist destinations in Belize, it’s also a sacred place to indigenous peoples, a rare archaeological treasure and a symbol of the nation’s commitment to preserving the cultural heritage of the hemisphere’s first people. For these reasons and more, only guided tours are permitted to protect both the cave’s sanctity and the priceless treasures that await visitors inside.

Cameras are not allowed within the cave. This rule is no frivolous request: skeletons and artifacts can be damaged by taking photographs, so follow in the footsteps of awe-struck visitors who appreciated this rare opportunity to go back in time and leave everything exactly the way you found it.

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