A 120-metre stone wall and associated structures off the French coast now lie about 30 feet underwater. Researchers date them to 5800–5300 BCE, when relative sea level was lower, and roughly 7–9 metres of later sea-level rise submerged the site. The surviving wall is about 7 feet high.
Archaeologists say it may have been a fish trap or a dyke against rising water, leaving an intertidal construction possible. The find shows substantial coastal engineering by Mesolithic communities around the Mesolithic–Neolithic transition and predates Stonehenge. It does not show that an advanced coastal society was wiped out by the sea. The video’s argument that the structures may be older still, and had to be built entirely above high tide, is not established. Corsican Taffoni are separate from this French discovery.
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Huge ancient undersea wall dating to 5800 BCE ...archaeologymag.comDivers discover a massive 5800 BC undersea wall off the French coast, revealing advanced coastal society over 7000 years ago.
Prehistoric Underwater Wall Hints at Sophisticated Human ...discovermagazine.comThe structures lie about 30 feet underwater and date to between 5,800 and 5,300 B.C.E., with sea levels considerably lower than today.
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Huge undersea wall dating from 5000 BC found in Francebbc.comThe 120 metre wall was either a fish-trap or a dyke for protection against rising sea-levels, archeologists believe.
7000-year-old underwater wall raises questions about ...bigthinkmedia.substack.comBy reconstructing ancient shorelines, researchers dated the wall to between 5,800 and 5,300 B.C. That's centuries older than Stonehenge, and ...
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