Pobull Fhìnn is a stone circle on the Isle of North Uist. The name is Gaelic which can be translated as 'Fionn's people,', 'the white/fair people', or 'Finn's tent'. The stones were probably named after the legendary Gaelic hero Fionn mac Cumhaill.
Of the several stone circles on the island, Pobull Fhìnn is the most conspicuous. It is located on the south side of Ben Langass, and it possibly dates from the second millennium BC. It is technically an oval rather than a circle, measuring about 120 feet from east to west and 93 feet from north to south. Although situated on a natural plateau, the north side of the enclosed area has been excavated to about four feet. At least two dozen stones can be counted, some eight on the northern half and 16 on the southern half, but parts of the circle are devoid of stones. About four feet within the circle at the east side is a tall single stone, and there are two fallen slabs about seven feet beyond the western edge.
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.