How long is the underground river portion?

The guided cave section covers roughly 600 meters of passage and about 90 minutes of walking and swimming through calm pools and shallow stretches.

Is prior rappelling experience required?

No; guides provide instruction and equipment for a controlled rappel into the river, but you should be comfortable with basic heights and following guide commands.

Are wetsuits and gear provided?

Yes—wetsuits, helmets with headlamps, special shoes and snorkeling equipment are supplied; you can bring your own water shoes if preferred.

Can children join the tour?

Public information indicates infants must sit on laps and the activity requires moderate fitness—confirm minimum age and child policies with the operator when booking.

Riviera Maya Secret Underground River: Rappel, Bike & Swim Adventure | bike-tour | other

You step off the van into humidity that smells of green leaf and wet limestone, then follow a short jungle track until the forest thins and a low limestone mouth yawns in front of you. Light from your helmet cuts through cool air; water whispers below. The underground river here dares you to enter — to trade the sun for echoing caverns, to cycle dirt trails that lead to a vertical drop and lower yourself into crystal-clear currents.