Dating from the Early Neolithic period (4000-3000 BC), Brownshill dolmen in Carlow is one of the mos
Dating from the Early Neolithic period (4000-3000 BC), Brownshill dolmen in Carlow is one of the most impressive Irish megalithic monuments. The capstone is truly massive & is estimated to weigh in excess of 150 tonnes & is believed to be one of the heaviest capstones in Europe -- source link
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