Dundalk Tomb: The Dundalk area has been inhabited since at least 3500 BC, when Neolithic farmers first came to Ireland. A tangible reminder of their presence can still be seen in the form of the Proleek Dolmen, the eroded remains of a megalithic tomb located at Ballymascanlon a few miles to the north of Dundalk. Celtic culture arrived in Ireland around 500 BC, having colonised most of Europe. The group that settled in North Louth were known as the Conaille Muirtheimhne and took their name from Conaill Carnagh, legendary chief of the Red Branch Knights of Ulster. Their land now forms upper and lower Dundalk. The poets in Celtic society were known as the fili and were responsible for mythological tales and legends, the most famous being the tales of the Red Branch Knights, the Táin Bó Cuailgne and Cúchulainn.