The Portal Tomb of Cunard (Irish: Cionn Ard) in the southwest of Dublin, Ireland, is a well-preserved Portal Tomb. It is situated beside a stream on marshy terrain, on a slope in the Dublin Mountains, overlooking the Dodder River near Tallaght in County Dublin.
Portal Tombs are megalithic structures found in Ireland and Britain, characterized by two equally tall, upright stones with a doorstone in between, forming the front of a chamber covered partially by a massive capstone. Portal Tombs date back to the Irish Neolithic period (3000 to 2000 BC) and can be found in both Ireland and Cornwall and Wales.
The Portal Tomb of Cunard has lost its two portal stones and stands at a height of only about 1.7 meters. The diamond-shaped capstone is approximately 2.2 meters in length and rests not on the portal stones but on the side stones.
