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A 7,000-Year-Old Giant Wall "Opens Perspectives in Underwater Archaeology" Discovered Off Finistère

Summary by Sud Ouest
An archaeological discovery off the island of Sein revealed a 120-metre-long submerged wall dating from 7,000 years ago. A finding that could make it possible to "better understand

6 Articles

Center

An archaeological discovery off the island of Sein revealed a 120-metre-long submerged wall dating from 7,000 years ago. A finding that could make it possible to "better understand

·France
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Lean Left

Scientists point out that the most important structures discovered, first noticed in 2017, "do not have the equivalent known in France for this period".

·Paris, France
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Center

The discovery dates back to May 2022 but has just been the subject of a scientific publication which shows the largest submerged construction in France: a 120 m long wall for 20 m wide, 9 m deep, not far from the island of Sein (29).

Lean Left

The 62 monolithic construction of 120 meters by 20 meters of wide discovery in Brittany would be a dam or dam dating from the Mesolithic.

·Paris, France
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French marine archaeologists have discovered a large underwater wall off the coast of Brittany, dating back to around 5,000 BC.

·Viet Nam
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Researcher Philippe Bodénes near a monolith planted in the wall of Toul ar Fot, off the island of Sein (Finstère). JEAN-MICHEL KEROULÉ/SAMM, 2023-2024 "We were returning from a dive near the lighthouse of Ar-Men, where we were looking for cannons. Back to the island of Sein [Finistère], as there was air in the bottles, we dived a second time."On 5 May 2022, Philippe Bodénes, president of the Society of Archaeology and Maritime Memory (SAMM), dis…

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Le Monde broke the news in Paris, France on Wednesday, December 10, 2025.
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