Explore a six‑hour, all‑inclusive expedition through one of the Yucatán’s famed underground rivers: cave swims, a jungle bike ride, a rappel to Xibalba, and three zip lines back to the canopy. Practical details and what to expect for first‑timers.
More ways to explore the area's outdoor wonders
You stand at the edge of the jungle with a helmet in one hand and a flashlight in the other, the air humid and the forest pressing close. A guide calls the group forward; a narrow trail drops toward a limestone mouth where water whispers and the cave mouth promises cool, dark passage. The underground river dares you forward — a corridor of black stone and calcified curtains shaped by millennia.
Difficulty
moderate
Duration
5–6 hours
Fitness Level
Good basic fitness; able to walk on uneven, wet surfaces, climb short ladders/stairs and handle short rappel; not suitable for those with serious mobility limits.
Wildlife
History
These caves were part of a vast network of waterways integral to Maya cosmology; early explorers documented both archaeological remains and extensive speleothems that formed over tens of thousands of years.
Conservation
The reserve limits group sizes and requires guided access to protect fragile formations and groundwater quality; follow guide instructions, avoid touching formations and use reef‑safe sunscreen for surface activities.
Reserve your spot on the Rio Secreto All Inclusive today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Bring a small dry bag
Keep phone, ID and cash in a waterproof pouch—the caves are wet and lockers are provided for larger items.
Wear closed, grippy water shoes
Traction is crucial on slick limestone and in shallow pools; sandals with straps or water shoes work best.
Mind flashlight etiquette
Use helmet lights sparingly to avoid disturbing wildlife and other visitors—point lights at formations when taking photos.
Hydrate before and after
The jungle heat and exertion make hydration important; bring an electrolyte bottle for the transfer and refill with provided water after the tour.
Waterproof phone case/dry bag
Protects electronics and documents from splashes and wet changing areas.
Quick‑dry clothing and change of clothes
Wetsuits are provided but you'll want dry clothes for the return transfer.
Sturdy water shoes
Closed, grippy footwear helps on slick cave floors and wet trails.
Lightweight rain jacket or windbreaker
Useful in summer rains or for the transfer if there's a coastal breeze.
summer