Barpa Langass is a Neolithic chambered cairn, which now survives as a massive pile of stone. It is located on a hill overlooking a dramatic landscape of barren peatland. The cairn is roughly 16 feet high, and around 82 feet across. The inner chamber is still accessible. From the east side of the tomb the narrow passage leads to a wide chamber. It is difficult to judge the original appearance of the cairn, but it has been suggested that it had a more bun like appearance with outer facing stones and an earthen top portion. This great cairn is the only chambered cairn in the Western Isles with its chamber still roofed over. During excavation in 1911 traces of burnt burials, beaker shards, an arrowhead and a disc of mica (maybe a pendant) were found. On the south side of the same hill is Pobull Fhinn an ancient stone circle.
At the time the cairn was built the Western Isles had a much milder climate, the peat bogs were not yet formed, and the landscape would have been more like southern scrubland and woodland. It would have been capable of providing pasture for grazing animals. Barpa Langass stands on the north side of Beinn Langais, and just half a mile from the stone circle of Pobull Fhinn To find this grand cairn travel to North Uist and it is signposted off the A867 Lochmaddy-Clachan road.
References:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.