prehistoric engineering

Above Overlooking the collapsed remains of the main dolmen a type of Neolithic chambered tomb at Garn Turne in Pembrokeshire.

How to build a dolmen: exploring Neolithic construction at Garn Turne

Well known on the Continent and scattered along the coasts of Wales, Cornwall, and Ireland, dolmens are an immediately recognisable form of chambered tomb. They represent remarkable achievements for their Neolithic builders, crowned with stones weighing as much as 160 tonnes. Vicki Cummings and Colin Richards investigate how these distinctive monuments were constructed – and what happened when a project did not go to plan.