Abismo Anhumas: The Epic Journey to the Underground of Bonito

In the universe of Brazilian destinations known for adventure, there is a place that has become a legend. A gateway to an underground world of colossal beauty and profound silence. In Bonito, this experience has a name that echoes with respect and admiration: Abismo Anhumas.

This is not a conventional tour. It is an expedition. The only way to enter this cave is by rappelling 72 meters (the height of a 26-story building) through a narrow crack in the rock.

Get ready to discover the itinerary that represents the most exclusive and thrilling experience in the Serra da Bodoquena.

A Crevice to Another World

Seen from the outside, Abismo Anhumas is just a small crack in the ground in the middle of a field. One can hardly imagine the universe that exists beneath it. This monumental cave, discovered in the 1970s, was only opened to visitors after years of study and the development of a safe and innovative electric rappelling system.

Only an extremely limited number of people (around 20 per day) have the privilege of descending into its interior, which makes the experience even more exclusive and well preserved.

Stage 1: Mandatory Training

Your journey to the abyss begins one day before the tour. Every visitor is required to take part in a training session in downtown Bonito on the day prior to the visit. Highly qualified instructors will teach you basic rappelling techniques, how to use the equipment, and will simulate a short descent and ascent. This step is essential to ensure your safety and confidence so that, on the following day, your only concern is enjoying the scenery.

Stage 2: The Descent – 72 Meters of Pure Emotion

The big day has arrived. Fully equipped, you position yourself on the platform above the crevice. Your heart races. The first meters are dark and narrow, but soon the cave opens up and reveals its immensity. As you descend in absolute silence, the light entering through the crack begins to illuminate a truly otherworldly scene.

Down below, a crystal clear lake the size of a soccer field awaits you. The 72 meter descent takes about 5 minutes, but every second becomes a memory etched forever. When you step onto the floating deck, the feeling is that of having arrived on an unknown planet.

Stage 3: Floating or Diving

After the adrenaline of the descent, it is time to explore the lake at the bottom of Abismo Anhumas. Its waters, with visibility of up to 30 meters, hide a geological treasure.

Floating: Equipped with a neoprene wetsuit, mask, and snorkel, you will float through the cold (around 18°C) and crystal clear waters. The main attraction is the limestone cones, giant submerged formations that resemble mountains, some over 19 meters tall. It is a lunar, silent landscape of austere beauty.

Scuba Diving (Introductory or Certified): For an even deeper immersion, scuba diving is the best option. You can get closer to the cones, explore crevices, and experience the sensation of flying through an underwater chamber. Abismo Anhumas offers both introductory dives (for beginners) and dives for certified divers, reaching depths of up to 18 meters.

The Ascent and the Feeling of Achievement

After the underwater exploration, the return journey is made via the same rappelling route, now on the way up. The electric system lifts you back to the surface. Emerging through the crevice and feeling the sun of Mato Grosso do Sul on your face again brings a mix of relief, euphoria, and the certainty that you have lived something truly extraordinary.

Tips for Abismo Anhumas

Planning and Reservation: This is the tour that requires the most advance booking in Bonito. Spots are extremely limited and sell out months ahead. Contact Bonito Travel as early as possible.

Physical Condition: You do not need to be an athlete, but you must be in good overall health.

What to Wear: Wear comfortable clothing that allows free movement (pants, leggings) and closed shoes (sneakers). Bring swimwear to wear underneath and a change of dry clothes.

A Once in a Lifetime Experience: Abismo Anhumas is more expensive than other tours, but the price is justified by the complexity of the operation, the exclusivity, and the experience, which for many is truly once in a lifetime.

Abismo Anhumas: The Ultimate Challenge in Bonito

Visiting Abismo Anhumas means crossing a personal boundary. It is a test of courage rewarded with one of the most surreal and spectacular landscapes nature can offer. It is the perfect union of adventure driven adrenaline and the contemplation of a geological sanctuary.

It is, without a doubt, the highlight of any itinerary for those seeking the extraordinary. An experience that places you in direct contact with the power and beauty of our planet.

The Bonito Travel team is ready to provide all the support and information for what may be the greatest adventure of your life. Do you have the courage?