fromBig Think
2 days ago7,000-year-old underwater wall raises questions about ancient engineering - and lost-city legends
Nine meters (30 feet) beneath the waves, they found it: a vast, man-made stone wall, averaging 20 meters (66 feet) wide and two meters (6.6 feet) tall. The structure consists of some 60 massive granite monoliths, set directly onto the bedrock in pairs at regular intervals. Smaller slabs and packing stones fill in the gaps, locking the whole into a single, deliberate construction. With an estimated total mass of around 3,300 tons, this is the largest underwater structure ever discovered in France.
France news

