Ancient Underwater Megastructure Not Created Naturally, Scientists Say

Scientists have found a giant wall underneath the Baltic Sea — and they’re pretty sure humans made it.

In a new paper published in the Proceedings of the National Academy of Sciences, the German research team who discovered the megastructure, which they’ve called the Blinkerwall, say they believe it was constructed for hunting on land.

As the paper penned by geoscience researchers led by Kiel University notes, some parts of the Baltic Sea basin only submerged in the mid-Holocene era, dating back between 5,000 and 7,000 years.

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