The Pit

The Pit is a deep open cenote located in the Riviera Maya near Playa del Carmen, Mexico, classified as a cave dive site reaching a maximum depth of 40 m (130 ft). It is an open-sky cenote, meaning natural light enters from above, but divers encounter low-light sections as depth increases through the overhead environment.

The cave interior presents several distinct conditions layered by depth: haloclines mark the transition between fresh and salt water, and a hydrogen sulfide gas layer forms a visible cloud within the water column, creating a dramatic visual effect while also posing a genuine hazard. Narcosis is a risk at depth in this overhead environment, and low-light settings require a dive light.

Conditions at The Pit are protected with no current, visibility is excellent, and water temperature holds steady between 24–26°C year-round. Bat colonies roost at the cenote, visible at the surface opening.