<Li> c. 3000 BC: Constructions in Sardinia (earliest construction phase of the prehistoric altar of Monte d'Accoddi), France (Saumur, Dordogne, Languedoc, Biscay, and the Mediterranean coast), Spain (Los Millares), Sicily, Belgium (Ardennes), and Orkney, as well as the first henges (circular earthworks) in Britain . </Li> <Ul> <Li> c. 2500 BC: Constructions in Brittany (Le Menec, Kermario and elsewhere), Italy (Otranto), Sardinia, and Scotland (northeast), plus the climax of the megalithic Bell - beaker culture in Iberia, Germany, and the British Isles (stone circle at Stonehenge). With the bell - beakers, the Neolithic period gave way to the Chalcolithic, the age of copper . </Li> <Li> c. 2400 BC: The Bell - beaker culture was dominant in Britain, and hundreds of smaller stone circles were built in the British Isles at this time . </Li> </Ul> <Li> c. 2500 BC: Constructions in Brittany (Le Menec, Kermario and elsewhere), Italy (Otranto), Sardinia, and Scotland (northeast), plus the climax of the megalithic Bell - beaker culture in Iberia, Germany, and the British Isles (stone circle at Stonehenge). With the bell - beakers, the Neolithic period gave way to the Chalcolithic, the age of copper . </Li> <Li> c. 2400 BC: The Bell - beaker culture was dominant in Britain, and hundreds of smaller stone circles were built in the British Isles at this time . </Li>

An arrangement of megalithic stones in a circle is called