The necropolis of Li Muri is an archaeological site located in the municipality of Arzachena. The necropolis, thought to be a product of the Arzachena culture and dating from the second half of the fourth millennium BC, is composed of five stone cists. Four of the cists are surrounded by stone circles that originally marked the limits of the mound of earth and rubble that was erected over the burial.
Bodies were interred inside the cists, probably individually (unlike in the rest of Sardinia where the graves were usually collective). The dead were accompanied by grave goods including pottery, stone vessels, hatchets and beads necklace of steatite and gemstones.
The architecture of the necropolis shows strong similarities with contemporary sites of Corsica, Provence and the Pyrenees.
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.