Ancient Monuments

History on the Ground

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

Pen Twr ring cairn

A Scheduled Monument in Treflys, 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: 52.1564 / 52°9'23"N

Longitude: -3.6151 / 3°36'54"W

OS Eastings: 289605

OS Northings: 252134

OS Grid: SN896521

Mapcode National: GBR YC.6CY1

Mapcode Global: VH5DF.9266

Entry Name: Pen Twr ring cairn

Scheduled Date: 11 September 2007

Source: Cadw

Source ID: 4293

Cadw Legacy ID: BR371

Schedule Class: Religious, Ritual and Funerary

Category: Ring cairn

Period: Prehistoric

County: Powys

Community: Treflys

Traditional County: Brecknockshire


The monument comprises the remains of a well-preserved ring cairn, probably dating to the Bronze Age (c.2300 BC - 800 BC) and situated on the gently sloping summit of the ridge of Cefn Gardys, above and to the S of Cwm Cynffiad and with fine views over the rolling landscape to the E. The ring cairn is circular on plan and measures about 16m in diameter within a grass-covered earthen ring bank 4m in thickness and up to 0.8m in height. The interior of the cairn is mounded, rising to about 0.4m above the external ground level. Although the cairn has been disturbed in the past, with erosion scars visible upon its ring bank and interior, the majority of the cairn appears to be largely intact.

The monument is of national importance for its potential to enhance our knowledge of prehistoric burial and ritual practices. Excavated examples have shown these monuments to be essentially ceremonial - although with a consistent link with the burial of the dead (some cremation burials have been revealed). Rituals involving the burning and deposition of charcoal, perhaps symbolic of the funeral pyre, would seem to have been important. The well preserved monument is an important relic of a prehistoric funerary and ritual landscape. It retains significant archaeological potential, with a strong probability of the presence of both intact burial or ritual deposits and environmental and structural evidence.

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.