Saint Island (Sena Gallica) in Celtic Sea off Brittany coast. Saint Island (Sena Gallica) in Celtic Sea off Brittany coast Island was much larger 7,900 years ago Black outline shows island extent 7,900 years ago
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
Key Facts
- Saint Island (Sena Gallica) in Celtic Sea off Brittany coast
- Island was much larger 7,900 years ago
- Black outline shows island extent 7,900 years ago
- White outline shows current modern-day coastline
- Island has been significantly drowned by rising sea levels
Related site: Sena Gallica — view location, images, and history on the Ancient Nerds map.
Source: Breaking News: 7000 year Old Ruins Found Under The Sea by The Randall Carlson