Sunken structures discovered off the coast of France (Île de Sein, Brittany). These submerged stone walls date back over 7,000 years — built on dry land when sea levels were much lower, then inundated as glaciers melted. Evidence suggests advanced Mesolithic coastal engineering, not traditional habitation — likely functional (fish-trap or sea defense). Such construction implies significant social organization.
7,000-year-old sunken structures discovered off the coast of France
Site mentioned
📍 Taffoni
Key facts
- 7,000-year-old sunken structures discovered off the coast of France
- Megalithic work dated 500 years before current dating methods
- Structures are not habitations but functional constructions
- Evidence of significant social organization required for construction
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