Far off the rocky tip of Brittany, a stone barrier nearly the length of a football field has emerged from the Atlantic, not by receding tides but through sonar scans and diver surveys. The ...

Far below the waves off western France, divers have mapped a vast Stone Age wall that has survived since around 5000 BC, a 7,000-year-old structure that turns a stretch of seabed into a frozen ...

Stephanie Piper does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...