The Standing Stones of Stenness is a Neolithic monument and may be the oldest henge site in the British Isles. Various traditions associated with the stones survived into the modern era and they form part of the Heart of Neolithic Orkney World Heritage Site. Maeshowe chambered cairn is about 1.2 km to the east of the Standing Stones of Stenness and several other Neolithic monuments also lie in the vicinity, suggesting that this area had particular importance.
The Stenness Watch Stone stands outside the circle, next to the modern bridge leading to the Ring of Brodgar.Although the site today lacks the encircling ditch and bank, excavation has shown that this used to be a henge monument. The stones are thin slabs, approximately 300 mm thick with sharply angled tops. Four, up to about 5 m high, were originally elements of a stone circle of up to 12 stones, laid out in an ellipse about 32 m diameter on a levelled platform of 44 m diameter surrounded by a ditch. The ditch is cut into rock by as much as 2 m and is 7 m wide, surrounded by an earth bank, with a single entrance causeway on the north side. The entrance faces towards the Neolithic Barnhouse Settlement which has been found adjacent to the Loch of Harray. The Watch Stone stands outside the circle to the north-west and is 5.6 m high. Once there were at least two stones there, as in the 1930s the stump of a second stone was found. Other smaller stones include a square stone setting in the centre of the circle platform where cremated bone, charcoal and pottery were found. This is referred to as a 'hearth', similar to the one found at Barnhouse. Animal bones were found in the ditch. The pottery links the monument to Skara Brae and Maeshowe. Based on radiocarbon dating, it is thought that work on the site had begun by 3100 BC.
The Heart of Neolithic Orkney was inscribed as a World Heritage site in December 1999. In addition to the Standing Stones of Stenness, the site includes Maeshowe, Skara Brae, the Ring of Brodgar and other nearby sites.References:
The Broch of Gurness is an Iron Age broch village. Settlement here began sometime between 500 and 200 BC. At the centre of the settlement is a stone tower or broch, which once probably reached a height of around 10 metres. Its interior is divided into sections by upright slabs. The tower features two skins of drystone walls, with stone-floored galleries in between. These are accessed by steps. Stone ledges suggest that there was once an upper storey with a timber floor. The roof would have been thatched, surrounded by a wall walk linked by stairs to the ground floor. The broch features two hearths and a subterranean stone cistern with steps leading down into it. It is thought to have some religious significance, relating to an Iron Age cult of the underground.
The remains of the central tower are up to 3.6 metres high, and the stone walls are up to 4.1 metres thick.