Poulnabrone Prehistoric Dolmen on a limestone plateau on the Burren in County Clare in Ireland. This megalithic tomb was constructed from slabs of limestone over 5000 years ago

Built over five thousand years ago Newgrange is a megalithic passage tomb. View over the entrance stone with the famous ‘Triple Spiral’ and ‘Diamonds’.

A rock engraving from the passagway of the megalithic structure of Knowth in Ireland.

Tomb

Western end of Ballynahinch Lake on R341,Connemara, Co Galway.