Akumal, Quintana Roo There’s actually a vast, interconnected network of these underground rivers and cenotes throughout the Yucatán—many of which have yet to be discovered. Aktun Chen ...

Aktun-Chen is located about 15 miles north of Tulum ... A combo ticket (which includes swimming in the cenotes, a cave tour and zip lining) costs $121 for adults and $95 for children.

Interested in swimming in a cave? Then head to Cenote Chaak Tun in Playa del Carmen, about one hour from Tulum in Sac Aktun-Chen Banh Natural Park. This cenote is only accessible via guided tours ...