Beneath the Sea, an Ancient 'Man-Made Megastructure'

More than 10,000 years ago, humans constructed a long, low wall, using rocks weighing a combined 150 tons. Discovered by accident in 2021, the Blinkerwall—submerged 70 feet...

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Jacob Geersen ,Vincent Gaffney ,Leibniz Institute For Baltic Sea Research ,University Of Bradford ,Leibniz Institute ,Baltic Sea Research ,Great Lakes ,Discoveries ,Archaeology ,Marine Archaeology ,Germany ,Stone Age ,Wall ,Hunter Gatherers ,