Rio Secreto, Playa del Carmen

Rio Secreto, known as the "Secret River," is an extensive network of limestone caves nestled near Playa del Carmen, Quintana Roo, Mexico. Covering approximately 38 kilometers, only a fraction of these caves, around 10%, are accessible for ecotourism. Preserved as a nature reserve, this subterranean wonderland has a rich history dating back centuries, with the local Maya utilizing the caves for rituals and leaving behind traces of their ancient presence in the form of artifacts like religious altars and cave paintings.

In 2004, a farmer stumbled upon the cave while pursuing an iguana into one of its entrances. Following this discovery, a team of local speleologists and divers embarked on a mission to map the caverns, delineating routes and fostering camaraderie among themselves. This period also saw the identification of the surface landowners, with whom a partnership was established to devise a comprehensive conservation strategy.

Formal exploration of the cave commenced in December 2006 and concluded in September 2007. By April 2008, the cave was opened to the public for guided tours. Over the years, Rio Secreto has become a popular destination, attracting 104,000 tourists in 2016 alone. The cave system, formed over millions of years by water erosion, features stunning geological formations such as stalactites, stalagmites, and helictites. It serves as a habitat for various species including bats, silkworms, and catfish.

Offering guided tours through its mesmerizing passages and crystal-clear waters, Rio Secreto promises an unforgettable adventure into the depths of the Earth, showcasing the raw beauty and ancient secrets hidden beneath the Mayan jungle of Playa del Carmen.