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Biggest underwater cave discovered

Divers have found the biggest underwater cave in the world, and it could contain Mayan secrets

January 17th, 2018

A team of divers have successfully explored a tunnel linking two gargantuan underwater cave systems in Mexico’s Yucatan peninsula, unlocking what they believe is the largest underwater cave system in the world. By discovering a tunnel that links Sac Actun, a 263-kilometer cave system near the beach resort of Tulum, with the 83km Dos Ojos system, researchers …