|Grey Wethers consists of a pair of prehistoric stone circles, situated on grassy plateau to the north of Postbridge, Dartmoor, in the United Kingdom.|
The circles are each approximately 33m (108 feet) in diameter, and less than five metres apart. Their centre points are aligned almost exactly north to south. The northern circle has 20 stones remaining, while the southern has 29 - all of a relatively consistent size, mostly between 1.2m and 1.4m (4-4.5 ft) in height.
An excavation was carried out in 1898 and a number of charcoal fragments were discovered within the circles. The circles were restored and many fallen stones re-erected in 1909.