Underwater cave system in the world

Sac Actun cave system in Mexico could help shed new light on ancient Mayan civilisation

http://www.abc.net.au/news/2018-01-18/biggest-flooded-cave-found-in-mexico-sac-actun/9338240

A group of divers has connected two underwater caverns in eastern Mexico to reveal what is believed to be the biggest flooded cave on the planet, a discovery that could help shed new light on the ancient Mayan civilisation.

Key points:

• Divers discover 347-kilometre cave in Mexico
• The finding was made by the Gran Acuifero Maya project
• The cave could shed more light on the history of the region

The Gran Acuifero Maya (GAM), a project dedicated to the study and preservation of the subterranean waters of the Yucatan peninsula, said the 347-kilometre cave was identified after months of exploring a maze of underwater channels.

The group found the cave system known as Sac Actun, near the beach resort of Tulum and once measured at 263 kilometres, connected with the 83-kilometre Dos Ojos system.

For that reason, Sac Actun now absorbs Dos Ojos.

Sistema Sac Actun (from Spanish and Yucatec Maya meaning "White Cave System") is an underwater cave system situated along the Caribbean coast of the Yucatán Peninsula with passages to the north and west of the village of Tulum. It is believed to be the world's largest underwater cave system currently (2018) known to exist

Sistema Sac Actun with 347.7 kilometers (216.1 mi) the longest cave in Mexico^[2] and the second longest worldwide

In 2018, a discovery of link between the Sac Actun system (reported to be 263 km long) and the Dos Ojos system in Tulum, Quintana Roo (84 km long) has been reported.^[6] The combined system is reported to be the world's largest underwater cave system known.

Limestone is a sedimentary rock, composed mainly of skeletal fragments of marine organisms such as coral, forams and molluscs. Its major materials are the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO₃).

LARGEST Underwater cave system in the world

 Sistema Ox Bel Ha - (Country) Mexico-   (State) Quintana Roo

for full list http://www.caverbob.com/uwcaves.htm

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