Ancient Monuments

History on the Ground

This site is entirely user-supported. See how you can help.

Twyn Disgwylfa platform cairn

A Scheduled Monument in Llangattock (Llangatwg), Powys

We don't have any photos of this monument yet. Why don't you be the first to send us one?

Upload Photo »

Approximate Location Map
Large Map »

If Google Street View is available, the image is from the best available vantage point looking, if possible, towards the location of the monument. Where it is not available, the satellite view is shown instead.


Latitude: 51.8518 / 51°51'6"N

Longitude: -3.2176 / 3°13'3"W

OS Eastings: 316227

OS Northings: 217723

OS Grid: SO162177

Mapcode National: GBR YX.TGJ3

Mapcode Global: VH6CG.5QT8

Entry Name: Twyn Disgwylfa platform cairn

Scheduled Date: 18 January 2007

Source: Cadw

Source ID: 4287

Cadw Legacy ID: BR357

Schedule Class: Religious, Ritual and Funerary

Category: Platform Cairn

Period: Prehistoric

County: Powys

Community: Llangattock (Llangatwg)

Traditional County: Brecknockshire


The monument comprises the remains of a platform cairn, probably dating to the Bronze Age (c.2300 BC - 800 BC) and situated on a NE-facing ridge on the on the NE side of the Brecon Beacons and overlooking the Usk Valley. The cairn is situated upon a distinct terrace, overlooked by higher ground on the N side and above and to the NE of the level basin containing the Carreg Waun Lech standing stone (BR272). The platform cairn is circular on plan and measures about 11.5m in overall diameter and about 0.4m in height. The cairn displays no evidence of original 'bulk' and a well-defined edge is occasionally visible; it is thus interpreted as a low platform cairn or as an infilled ring cairn.

The monument is of national importance for its potential to enhance our knowledge of prehistoric burial and ritual practices. The well-preserved monument is an important relic of a prehistoric funerary and ritual landscape and retains significant archaeological potential, with a strong probability of the presence of both intact burial or ritual deposits and environmental and structural evidence. The likelihood that the cairn is an example of a more unusual structural class of cairn, the platform cairn or ring cairn, further increases its importance, as does the topographic association with the contemporary standing stone situated c. 350m to the SSE.

The scheduled area comprises the remains described and an area around them within which related evidence may be expected to survive. It is circular and measures 30m in diameter.

Source: Cadw

Other nearby scheduled monuments is an independent online resource and is not associated with any government department. All government data published here is used under licence. Please do not contact for any queries related to any individual ancient or schedued monument, planning permission related to scheduled monuments or the scheduling process itself. is a Good Stuff website.