Here’s what you’ll learn when you read this story:Ruins of a prehistoric stone wall submerged off the northwest coast of France may be evidence that a sunken city of legend actually existed. Atlantis may only exist in legends (unless it is actually recovered from the ocean someday), but another sunken city that inspired a myth is now rising from the deep. Together, the fragments weigh 3,300 metric tons, which can also support the idea of larger structures built to prevent flooding when the sea level rose. There is also a link to the City of Ys, a Breton legend passed down through oral tradition over the centuries. Mythical or not, this city is thought to have been submerged in the Bay of Douarnenez just east of of Ice de Sein.