World’s longest underwater cave system discovered in Mexico by divers

Discovery of 347km-long cave by the Gran Acuifero Maya project could shed light on Mayan history

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.

The discovery could also help shed new light on the ancient Maya civilization.

Near the beach resort of Tulum, the group found that the cave system known as Sac Actun, once measured at 263 km, connected with the 83km Dos Ojos system, the project said in a statement. Sac Actun now absorbs Dos Ojos.

Guillermo de Anda, director and underwater archaeologist on the Gran Acuifero Maya team, said the “amazing” find would help to understand the development of the rich culture of the region, which was dominated by the Maya civilization before the Spanish conquest.

“It allows us to appreciate much more clearly how the rituals, the pilgrimage sites and ultimately the great pre-Hispanic settlements that we know emerged,” he told Reuters.

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