Underwater Cave Diving Exploration in Cenote Myan Blue | EP. 4 The Dead Zone | Tulum, Mexico

The enigmatic Mayan Blue (Escondido) Cenote or Cave, a jewel in the crown of the World’s Longest Underwater Cave, the Ox Bel Ha Cave System (‘Three Paths of Water’), is a sight to behold.

@TarzanIstann

Contact if interested in a guide to dive with you in this cave!

Historically, the Mayan Blue (Escondido) Cenote, the Jailhouse Cenote, and the Naharon Cenote were part of the Naranjal Cave system. On the weekend of March 28, 2011, Steve Bogearts of Playa del Carmen connected Sistema Naranjal to Sistema Ox Bel Ha. Support cave diver Bil Philips of Tulum assisted with logistics.

This cave area would be considered one the most outstanding in the Riviera Maya if not for all the tannic-stained walls and decorations above the halocline at 60 ft (18.3 m). This tannic acid intrudes into the aquifer from a huge swamp area 8 km west of Nahaton Cenote into the jungle. Within geological time (thousands of years), the tannic acid stains the calcium carbonate into a dark brown. Because everything is so dark, the cave divers’ light is absorbed. The few saltwater areas are not affected as the calcium carbonate is bleached by the saltwater.

Nestled south of Tulum and near the captivating Sian Ka’an Biosphere Reserve, the Ox Bel Ha cave system unveiled its mysteries in 1996 when a team of cave divers embarked on its discovery and exploration.

Ox Bel Ha Cave System from January 2023 (thanks to CINDAQ team efforts) becomes again the World’s Longest Underwater Cave. It boasts an impressive length of 496.8 kilometers (308.6 mi), securing its status as the world’s longest underwater cave system. As of the end of 2023, the cave system encompassed 160+ cenotes. The most notable ones are cenote Jailhouse, cenote Naharon, cenote Escondido (Mayan Blue). According to the latest CINDAQ annual report, the system includes 56674 survey stations, 615 sections, more than 2500 jumps, 1500+ T intersections, and 7683 cave line markers.


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