Stones 10-19 on the southeast side of the circle, viewed from northeast. Stone 10 is prominent in the foreground, stones 11 and 12 are on the left, and several burial mounds can be seen in the distance. Ring of Brodgar, c. 2500 BC. Mainland, Orkney Islands, Scotland. Measuring nearly 104 m in diameter, this impressive Neolithic monument is a true circle that is thought to have originally consisted of 60 stones. Today 27 stones remain standing, ranging in height from 2.1 m to 4.7 m. The ring is positioned on a scenic strip of land between the freshwater Loch of Harray (to NE) and the saltwater Loch of Stenness (to SW).