Diving in Mexico Cenote Zapote

Cenote Zapote must be the world’s weirdest dive site. From the surface this enticing orb loaded with crystal clear water and lush plants reveals nothing of the mind-blowing formations called Hell's Bells found within. If you assemble your scuba gear and slip below the surface down the hour glass to a depth of 28 metres, what you see will knock your fins off.

Little is known of the enigma that is Hell’s Bells. How were they formed? Why are they found here? Why is there no other dive site quite like this one? There's only one thing I know for sure... you've got to see it to believe it.
The underwater cavern of Cenote Zapote is much bigger than you might believe from the surface. The entrance shaft pinches in at 21 metres before ballooning out into a spectacular room that undercuts the rock. A thick layer of noxious hydrogen sulphide is found between 35 and 42 metres. Trees from the talus cone (the cone of debris and scree material that has fallen into the cenote) poke up through the cloud.

A lined ring route has been laid through the bell formations and takes you around the perimeter. The depth on the line varies from 28 to 33 metres. There is one T intersection with the stem of the T extending back into the centre of the circle and tied off to a tree.

If you are diving trimix and head below the hydrogen sulphide expect it to be completely dark below (cave training and technical training highly recommended). There is a line that circumnavigates the debris cone. Scientific studies are being performed below the hydrogen sulphide on the skeleton of a sloth. Please respect the investigation by staying well clear and not touching or disturbing anything with fingers or fins.

A small section of cave has been explored.