Craig Rhiwarth
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  Shown within Powys | |
| Location | Near Llangynog, Wales |
|---|---|
| Coordinates | 52°49′58″N 3°24′7″W / 52.83278°N 3.40194°W |
| OS grid reference | SJ 056 270 |
| Altitude | 532 m (1,745 ft) |
| Type | Hillfort |
| History | |
| Periods | Bronze Age Iron Age |
Craig Rhiwarth is a mountain in the Berwyn range, in Powys (formerly Montgomeryshire), Wales, overlooking the village of Llangynog to the south. On the summit is an Iron Age hillfort, and there are remains of slate quarrying on the southern slopes.
The altitude of Craig Rhiwarth is 532 metres (1,745 ft);[1] the hillfort is one of the highest in Wales. The size of the enclosure is about 850 metres (2,790 ft) east to west by 400–500 metres (1,300–1,600 ft). The site has precipitous slopes on all sides except the north: on this side there is a ruinous stone wall above a scarp. There is a simple entrance near the centre of the wall and a slanting entrance at the west end.[2][3]
Within this area are the foundations of about 170 circular stone structures, of diameter 4–12 metres (13–39 ft). It is thought that the settlement may have begun in the late Bronze Age and continued into the Iron Age, and that its function probably ceased by the time of the Roman conquest in the 1st century A.D. There are also a few rectangular hafodydd, probably of medieval date, relating to seasonal settlement.[3][4]
