Waun Mawn Standing Stone

About

Waun Mawn (Welsh for "peat moor") is a megalithic site in the Preseli Mountains of Pembrokeshire, Wales. Following excavations in 2018, it became the site of a supposed dismantled Neolithic stone circle. The diameter of the postulated circle was estimated to be 110 m (360 ft), making it the fifth largest diameter for a British stone circle, after Avebury (331.6 m (1,088 ft)), Stanton Drew (113 m (371 ft)), Karl Lofts (estimated 122 m (400 ft)), Long Meg (maximum 120 m (390 ft)), and slightly larger than the Ring of Brodgar (104 m (341 ft)).

The site is located around 1 mile (1.6 km) to the south west of Brynberian. This tract of moorland sits on the southern slopes of the 339 m (1,112 ft) hill top of Cnwc yr Hŷdd ("cock of the corn"), just to the north of the broad east–west ridge of the Preseli range. There are four stones at the site today, one standing and three prostrate.

Nearby are the Troed y Rhiw ("foot of the hillside") standing stones and to the west of the main group is another solitary standing stone, the 'Waun Mawn Stone', measuring some 2.3 m (7 ft 7 in) high.