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In pictures: Mexico's World biggest flooded cave
January 17, 2018 | 4:25 PM
by Reuters
A scuba diver measures the length of Sac Aktun underwater cave system as part of the Gran Acuifero Maya Project near Tulum, in Quintana Roo state, Mexico on January 24, 2014. Photo - Herbert Mayrl/Courtesy Gran Acuifero Maya Project (GAM)/Handout via Reuters
 
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