Ancient Monuments

History on the Ground

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

Crug yr Afan Round Cairn

A Scheduled Monument in Treorchy (Treorci), Rhondda, Cynon, Taff (Rhondda Cynon Taf)

More Photos »
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: 51.6474 / 51°38'50"N

Longitude: -3.5618 / 3°33'42"W

OS Eastings: 292040

OS Northings: 195447

OS Grid: SS920954

Mapcode National: GBR HF.7DSB

Mapcode Global: VH5GS.6VWG

Entry Name: Crug yr Afan Round Cairn

Scheduled Date:

Source: Cadw

Source ID: 2882

Cadw Legacy ID: GM233

Schedule Class: Religious, Ritual and Funerary

Category: Round cairn

Period: Prehistoric

County: Rhondda, Cynon, Taff (Rhondda Cynon Taf)

Community: Treorchy (Treorci)

Built-Up Area: Treorchy

Traditional County: Glamorgan


The monument comprises the remains of a burial cairn, probably dating to the Bronze Age (c. 2300 - 800 BC). It is situated on open moorland on top of the ridge. The cairn is turf covered and measures 21m in diameter by 3m in height. It has a flat top and on the north side is a disturbance hollow measuring c. 3m by 1.5m deep which is filled with stones, a concrete boulder and an iron pipe. On the south side of this hollow part of the interior, the mound is exposed showing a packing of stones. The cairn was excavated in 1902 and a cist was found in the sub-soil beneath the mound.

The monument is of national importance for its potential to enhance our knowledge of prehistoric burial and ritual practices. The 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, together with environmental and structural evidence. Cairns may be part of a larger cluster of monuments and their importance can further enhanced by their group value.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive.

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.