San Gervacio was not only an important religious site, but a key commercial location for the Mayan people, and a look around the impressive ruins will reveal some interesting clues to ancient life on the island. There is plenty to see and do at this site, and when you have finished looking around the ruins, you can take a break and grab a bite to eat in the restaurant or buy some souvenirs from the book or craft stores.
Day 4 (Rio Secreto & Akumal beach): I read about Rio Secreto on Tripadvisor and it almost immediately grabbed by attention. Just 10 min by "taxi collectivo" from Playa del Carmen, this hidden gem will blow your mind. The underground water reserve has thousands of dramatic stalactites and stalagmites. It’s like stepping back in time to witness something mysterious and truly spectacular. Before the tour began, there was an introductory video about the story behind the formations and the caves. We were then taken into a van and driven for about 20 minutes deep into the woods. They gave all the gear required, suit, floats, water boots, the works.