Gaer Llwyd - Garnllwyd

Gaer Llwyd Neolithic dolmen is dated to 4000BC and is made up of the remains of a chambered tomb about twelve feet in length with a large broken capstone. It is located close to the village of Llangwm, Monmouthshire, Wales (Wesh: Sir Fynwy, Cymru) on the B4235 Chepstow to Usk road.