7000-Year-Old Underwater Wall Off France Stuns Scientists

• A 7,000-year-old stone wall and other man-made structures were discovered underwater off the western coast of France, near Île de Sein, Brittany.
• The main wall is approximately 120 meters long, accompanied by about 12 smaller granite structures, dating back to around 5800-5300 BCE.
• The discovery began in 2017 with retired geoscientist Yves Fouquet analyzing laser maps, leading to diver investigations between 2022 and 2024.
• Scientists are surprised by the structures' preservation despite harsh marine conditions, suggesting advanced technical knowledge and an organized society from that era.
• The structures were likely built when the area was coastal land, possibly serving as fish traps or protection against rising sea levels.

Why It Matters: This 7000-year-old underwater wall challenges understanding of ancient human tech.