Divers discovered a massive 7,000-year-old undersea wall off the coast of Brittany, France! Nearly 400 feet long with about a dozen smaller manmade structures from the same period, found 9 meters underwater. Dating to approximately 5,000 BC, it was built when sea levels were much lower than today — revealing an advanced coastal society over 7,000 years ago 🌊🏛️
Key facts claimed:
- Off the coast of western France / Brittany
- Wall is approximately 120 meters (nearly 400 feet) long
- Contains large granite slabs with upright monoliths at regular intervals
- About 12 smaller associated stone structures found nearby
- Constructed when sea levels were lower; now submerged
- Likely functioned as a fish-trap or protective dyke against rising waters
- May be connected to the legendary lost city of Ys