If you are an advanced certified diver certified by PADI, SSI, FFESSM or any other diving organization, you have to try this.
Located in Dos Ojos cenote park, you will cross the jungle to get there. There are plenty of cenotes around (more than 6000 in the Yucatan Peninsula) but not all of them are caverns. In order to be called a cavern, it has to have no restriction, be in constant contact with the sunbeams and have an exit at less than 50 meters from anywhere you can be.
The Pit is a deep dive down to 30 meters deep. That is the reason why only advanced divers will be allowed to dive it.
It seems like a bottomless well. You will enjoy amazing sun beams if you dive early in the morning. If you haven't experienced the halocline already, take a time to enjoy this natural line separating fresh and salted water. For a moment, you will get lost, with no clear visual landmark. It is a very special feeling but no worries it won't last long ! Once you've crossed it, you will be back in the crystal clear water of the fresh river.
Between 25 and 30 meters deep you will find an hydrogene sulfide cloud with tree branches getting out of it like in Angelita. You are almost done but still observe the millions of limestone formations of all types and sizes like stalactites and stalagmites, fossils and the sunbeams playing like a video laser work of art.
It is ideal to deep dive in Pit and then discover the amazing Dos Ojos cenote for a very complete tour as Dos Ojos has very different shapes, depth and characteristics.
Cave divers will be able to dive down to 40 meters and see what's under. No major difference except the narcosis feeling which will be more important by diving deeper.
Pit cenote has been elected as amongst the top 10 dives in the world so you souldn't miss it when diving in Tulum cenotes !
Free divers also like to dive there and especially photo shooting are amazing early in the morning when the sun is shining and passing through the clear water.