This long cairn stands on the western slopes of Dour Hill above the valley of the River Rede. It dates to the Neolithic and is one of very few such cairns that survive in Northumberland. The cairn measures 50m long by 8.5m wide and has a maximum height of 2m. At the southern end is a later, Bronze Age, cist, or stone coffin, which was excavated in the 1930s and a flint tool was found. A survey of the cairn in the 1990s suggested that the cairn was built in two separate phases. The first was the D-shaped central mound with between two and four circular chambers, followed by remodelling to create the overall effect of a long cairn, possibly in the Early Bronze Age. This is a Scheduled Monument protected by law.