Trethevy Quoit is awesome in every respect. With an estimated construction date of around 4500 BC, it is one of the oldest manmade structures in Britain. It is also the best preserved of all the Cornish dolmens, or burial sites, and one of the easiest to visit, being situated in a field right next to the road in the centre of the hamlet of Trethevy. It’s believed that the stones were originally covered with soil and grass, but over the centuries the earth has disappeared to reveal the extraordinary ‘skeleton’ of granite beneath.