Carnac is famous as the site of more than 10,000+ Neolithic standing stones, also known as menhirs. The stones were hewn from local rock and erected by the pre-Celtic people of Brittany. Local tradition claims that the reason they stand in such perfectly straight lines is that they are a Roman legion turned to stone by Merlin (Brittany has its own local versions of the Arthurian cycle).
The Carnac stones were erected during the Neolithic period which lasted from around 4500 BC until 2000 BC. The precise date of the stones is difficult to ascertain as little dateable material has been found beneath them, but the site’s main phase of activity is commonly attributed to c. 3300 BC. One interpretation of the site is that successive generations visited the site to erect a stone in honour of their ancestors.