portal dolmen

Archaeologists from the Welsh Rock Art Organisation have just begun excavating a Neolithic chambered tomb known as Perthi Duon on the Isle of Anglesey, an island off the north-west coast of Wales. The purpose of the excavation is to gain a better understanding of the burial and ritual practices that took place in the region over five millennia ago. Perthi Duon, one of eighteen extant stone chambered monuments located within a 1.5 km corridor of the Menai Straits, stands as a solitary capstone within a prehistoric landscape in southern Anglesey, a historical island where more than 120 burial chambers, megaliths, settlements, and other ancient structures have already been found. According to historical records, Perthi Duon formed part of a collapsed