Gorsedd Circle The Gorsedd Cir cle is a stone circle in Fishguard, Wa les. T he Gorsedd Stone s are a Welsh tradition of modern stone circles constructed for the National Eisteddfod of Wales. These stone circles can be found at several locations, including Ab erdare Park and A nglesey. They are typically 20 meters wide and have 12 stones on the circumference with a level stone in the circle. A further stone is usually set back from the circumference, the central stone is called the Logan Stone. Coordinates 51.996431,-4.975040 Stone Circle Gorsedd Circle is a typical stone circle but has 13 stones on the circumference with one inset. It was erected in 1936 and has the names of the parishes inscribed on each stone. Ceremony During the opening ceremony, the Archdruid stands on the Logan Stone facing the Stone of the Covenant. Two stones mark the entrance and are called the Portal Stones. These mar k the midsummer and midwinter sunrises. Gorsedd Circle (no edit) Archeology77 ©
Neolithic Tombs of Sardinia These are so-called megalithic gallery graves that feature stone cairns built during the Bronze Age. Sardinia was populated by the Nuragic civilization from about 1800 bc and Ozieri culture in 3200-2800 bc. Giant's grave at Arzachena, Coddu Vecchiu, Lu Brandali, and Li Lolghi stay in better condition than tombs like Giant's grave of S'Arena which are in disrepair. These tombs are thought to be built by the Nuragic civilization, which were the same people who built the Nuraghes. Coddu Vecchiu As with other tombs, the facade is curved. This curve could be considered as part of a circle with a radius 13m in front of it. There are no centres for these circles, so their angle with the horizon is measured. In this tomb, for accuracy, it is the small back stone that aligns with the entrance. This is at 3° and could equate to 49 bc. The tomb is about 10m long and 3° at 10m in a triangle, which gives a side of 0.524m. At pi, it is 0.549m