Er Lannic

Er Lannic is a small islet in the Gulf of Morbihan, Brittany, containing two semi-circular megalithic enclosures comprising around 114 standing stones. The northern enclosure measures 66 metres in diameter and the submerged southern enclosure 61 metres, originally standing on a hillock on the mainland before post-Neolithic sea level rise partially submerged them. Excavated and restored by Zacharie Le Rouzic between 1923 and 1926, the site yielded significant ceramic artifacts including pedestalled cups now displayed at the Carnac Prehistory Museum. The islet now serves as a protected bird reserve and listed historic monument.