Steinacleit is a prehistoric archeological site on the west coast of Lewis in the Outer Hebrides of Scotland. The site consists of an array of boulders which marks what is left of a chambered cairn, and possibly shows the site was overlain by a huge hall. There are ten large stone slabs surrounding the central mound. Folk legend of the Outer Hebrides states there was probably a battlefield near the location. The site is 50 feet in diameter and oval in shape. The age of the site is debatable and according to different sources ranges from 1800–1500 BC or 3000–1500 BC.
The standing stone Clach an Trushal is visible to the south west from the stone circle.
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.