Near the beach resort of Tulum, the group found that the cave system known as Sac Actun, once measured at 263 km (163 miles), communicated with the 83 km- (52 km-) Dos Ojos system, the GAM said in ...
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The world's longest underground river is an epic 95 miles longHidden beneath Mexico's Yucatan Peninsula lies a breathtaking marvel of nature. The Sistema Sac Actun is the world's longest underground river system, stretching an incredible 95 miles. This epic ...
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