Sac Actun is a prime example. This underground river and cave system is among the longest in Mexico, measuring nearly 260 miles long with a maximum depth of 300 feet. There are 111 cenote ...

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 ...