Grey Cairns of Camster

The Grey Cairns of Camster are two large Neolithic chambered cairns around 8.5 miles south of Watten and 5 miles north of Lybster in Caithness, in the Highland region of Scotland [1]. They are among the oldest structures in Scotland, dating to around 3,000 BC [1]. The cairns demonstrate the complexity of Neolithic architecture, with central burial chambers accessed through narrow passages from the outside [1]. Camster Long is a 60 m long cairn with "horns" at each end, aligned in a NE–SW direction [1]. Camster Round is, as the name suggests, a circular cairn; it measures 18 metres in diameter by 3.7 metres high [1].