Cenote Dos Ojos
Lonely Planet review
About 4km south of Xcacel-Xcacelito – and 1km south of Xel-Há – is the turnoff for Cenote Dos Ojos , which provides access to the enormous Dos Ojos cave system. You can take guided snorkel (M$300) and dive tours (M$780 to M$1170) of some amazing underwater caverns, floating past illuminated stalactites and stalagmites in an eerie wonderland. With an aggregate length of nearly 57km, it’s the third-largest underwater cave system in the world.