"The Pit is an incredible dive site in Tulum Mexico. A fresh water sinkhole with unlimited visibility a hydrogen sulfide layer (aka 'the cloud') and an 'island' of debris (with it's own tree which you can see in the picture)" says photographer Tom St George.
This is so very interesting! If you want to learn more about the Mayan Civilization. This is a good one! - Pit Cenote, Mexico - AirPano.com • 360° Aerial Panoramas • 360° Virtual Tours Around the World