The Saint Croix Basin, an Irrigation Marvel for a Forgotten Civilization?

In my previous two-part article titled "The Exceptional Cuban Underwater City," I argued that the existence of a city at a depth of over 2,000 feet (609 m) below sea level off the coast of Cuba.
In my previous two-part article titled \'The Exceptional Cuban Underwater City,\' I argued that the existence of a city at a depth of over 2,000 feet (609 m) below sea level off the coast of Cuba. 
In my previous two-part article titled The Exceptional Cuban Underwater City, I argued that the existence of a city at a depth of over 2,000 feet (609 m) below sea level off the coast of Cuba. 

Nearly Lost from The Pages of History, Mari Is The Oldest Known Planned City in the World

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Cahokia: The Rise and Fall of an Indigenous Empire

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Massive First-Century Capitolium Temple Identified in Northern

Was This Giant Stone Sphere Crafted by an Advanced Civilization of