Chûn Quoit is one of the best preserved of all Neolithic quoits (also called dolmens or cromlechs) in western Cornwall. Like the other quoits, it was probably covered by a round barrow, of which much evidence abounds. It was a closed chamber and its mushroom-domed capstone measures 3.3 m by 3m. There is a cup mark on top of the capstone. It is supported about 2 m from the ground by four substantial slabs. There is evidence of an entrance passage to the south-east within the mound area. The site was examined in 1871 but no significant finds were made.
In the vicinity of Chûn Quoit there are many other megalithic and archaeological sites, such as Lanyon Quoit, Mulfra Quoit, Mên-an-Tol and Mên Scryfa. The rocky outline of Carn Kenidjack marks the position of midwinter sunset away to the south-west.
This is the only dolmen in West Penwith to retain its capstone 'in situ' – others have been re-settled. It is believed to have been built around 2400 BC, two millennia before the neighbouring Chûn Castle.
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.