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Divers discover world's largest underwater cave system filled with Mayan mysteries

Researchers in Mexico discover the longest underwater cave system in the world that's full of invaluable artifacts. 

Divers of the GAM project. Credit: Herbert Meyrl.


Mexican scientists discovered the world’s largest flooded cave system that extends an amazing 216 miles (347 km) and is filled with artifacts. The maze of caves is a major archaeological find that promises to shed light on the mysteries of the Mayan civilization. 

Underwater archaeologist Guillermo de Anda of Mexico's National Institute of Anthropology and History led the Great Maya Aquifer Project (GAM), which has been exploring underwater caves on the Caribbean coastline of the Yucatán Peninsula in Mexico for decades. The region has 358 freshwater flooded cave systems that stretch for over 870 miles (1,400km). 

De Anda explained that their accomplishment has wide-ranging significance:

"This immense cave represents the most important submerged archaeological site in the world," said de Anda. ”It has more than a hundred archaeological contexts, among which are evidence of the first settlers of America, as well as extinct fauna and, of course, the Maya culture."

The current research effort took 10 months and proved that two caves systems - the Sac Actun System and the Dos Ojos caves are actually part of one continuous and, certainly gigantic, cavity in the Earth.

Inside the cave system. Credit: GAM

GAM exploration director Robert Schmittner told the Mexican newspaper El Pais how the research team came close a number of times to proving the connection between the two giant cave systems.

"It was like trying to follow the veins within a body,” said Schmittner. “It was a labyrinth of paths that sometimes came together and sometimes separated. We had to be very careful." 

Now that the researchers showed that the two cave mazes are linked, they think another three underwater cave systems can be added to what is already the longest cave labyrinth in the world.


Diver inside the underwater caves. Credit: GAM

The impressive caves present an invaluable scientific loot, with divers finding a large amount of Mayan artifacts like ceramics, remains (including those of early humans, giant sloths and tigers) and extinct fauna.

De Anda called the caves a ”tunnel of time that transports you to a place 10,000 to 12,000 years ago."

Check out this video about the find, which has some great footage:

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