Step beneath the Riviera Maya into Río Secreto’s semi-flooded caves: a guided 800‑meter route of walking, wading and short swims through calcite galleries. This practical guide explains what to expect, why the site matters, and how to prepare.
More ways to explore the area's outdoor wonders
A damp hush meets you at the cave mouth: warm jungle air gives way to cool stone, and headlamps pick out slick passages and the slow drip of ancient water. Guided small groups duck under low ceilings, step into ankle- to chest-deep pools, and follow a clear underground river that threads through sculpted galleries. The lamps throw pale light on curtains of calcite and columns that rise like frozen waterfalls.
Difficulty
easy
Duration
4 hours
Fitness Level
Suitable for most fitness levels; participants should be able to walk, wade and manage short swims over uneven terrain.
Wildlife
History
Río Secreto sits in the Yucatán karst landscape; its caves were aquifer channels and held spiritual significance for the ancient Maya as portals to the underworld.
Conservation
The site operates as a protected reserve with strict visitor limits and no‑touch policies to preserve fragile speleothems and the aquifer; follow all guide instructions to minimize impact.
Reserve your spot on the Underground River and Cave Tour at Rio Secret today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Bring a swimsuit and quick‑dry layers
You’ll be in the water for stretches; a swimsuit under a wetsuit and a change of clothes for after keeps you comfortable.
Wear secure, non‑slip footwear
Special shoes are provided but if you have reliable water shoes bring them—steps are slippery and uneven.
Use a waterproof case for your phone
Lockers are available but if you plan limited photos bring a small waterproof case and avoid flash photography.
Hydrate and avoid heavy meals beforehand
The tour includes a buffet, but warm, humid conditions before entry can sap energy—drink water and pace food intake.
Swimsuit
Worn under the provided wetsuit for comfort during wading and swims.
Quick‑dry clothes and towel
Useful for the return trip—pack a dry change of layers to stay warm.
Waterproof phone case or small dry bag
Protects electronics if you plan to take photos near pools; lockers are available for valuables.
Light hiking sandals or water shoes (optional)
Provided shoes exist, but a familiar pair of secure water shoes can improve footing on slippery passages.