Move from jungle tracks to the cool hush of an underground river on this full‑day Río Secreto tour. Learn basic cave geology and Maya history while biking, rappelling, walking and snorkeling through dramatic calcite chambers.
More ways to explore the area's outdoor wonders
You step off the van into humid air thick with jungle scent; a wooden walkway drops toward an open sinkhole and a shaft of daylight kicks dust motes into motion. Below, the cave mouth exhales cool, mineral-scented air and the underground river seems to dare you forward—black water interrupted by bright calcite and the shadow of a stalactite older than memory.
Difficulty
moderate
Duration
6–10 hours
Fitness Level
Moderate — requires standing and walking on uneven, sometimes wet surfaces, plus short swims; not strenuous cardio but good balance helps.
Wildlife
History
Caves across the Yucatán were sacred in Maya cosmology and used for offerings and ceremonial access to the underworld; many formations here predate modern human settlement.
Conservation
Río Secreto operates with strict visitor limits, guided paths and no‑touch policies to protect delicate speleothems and maintain water quality; visitors are asked to avoid sunscreen and insect repellent before entering.
Reserve your spot on the Explore an Underground Caver & River in our PLUS experience today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Footwear that grips
Wear closed-toe water shoes with aggressive tread — limestone is smooth and slippery when wet.
Bring a dry change
Pack a quick-change of clothes and a towel in a waterproof bag; humidity and river swims mean you’ll want dry layers after the tour.
Hydrate before you go
Carry water and sip before the tour starts—guides recommend staying hydrated but bottles are best left on the van or in lockers.
Follow guide instructions
Stay with your group, use the provided helmet and life vest, and avoid touching formations to protect fragile stalactites and stalagmites.
Closed‑toe water shoes
Protects feet on slick limestone and provides grip in shallow swims.
summer
Lightweight quick‑dry clothing
Dries fast after river sections and keeps you comfortable in humid conditions.
summer
Waterproof bag / dry sack
Keeps phone, wallet and spare clothes dry during the underground swims.
Reusable water bottle
Refill before the tour to stay hydrated during transfers and waiting periods.