Gulf of Morbihan
The Gulf of Morbihan in France is the scene of an extraordinary number of megalithic ruins: passage dolmens, stepped pyramids with underground dolmen chambers, stone circles, and giant menhirs, among others.The site best known to outsiders is Carnac, where remains of a dozen rows of huge standing stones run for over ten kilometers. Some of its ruins have been dated to at least 4500 BC—2000 years older than England's Stonehenge.