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Cof Cymru: National Historic Assets of Wales · Wales

Three Round Cairns on the Southern Side of Mynydd-y-Glog

Hirwaun, Rhondda Cynon Taff, Wales

The record

Designation
Scheduled monument
Site type
Round Cairn
Period
Prehistoric
Date of designation
29 September 1999
Community
Hirwaun
Unitary authority
Rhondda Cynon Taff
Country
Wales
Coordinates (centre of the scheduled area)
51.76460, -3.48149
SAM number
GM525
Cadw record number
1588

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1636 "Cornubia : Devonia, Somersetus, Dorcestria, Wiltonia, Glocestria ..." (David Rumsey Map Collection, Stanford Libraries).

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This record in Cadw's own full report ↗

Cadw's description

The following provides a general description of the Scheduled Ancient Monument.

The monument comprises the remains of three burial cairns, probably dating to the Bronze Age (c. 2300 - 800 BC). The monument also includes the foundations of a later, possibly medieval, rectangular building measuring 7m by 5m, probably constructed of stones taken from the cairns. The cairns measure between 8.5m and 16m in diameter survive to an average height of 1m. The cairns are situated within sight of each other on the southern side of the summit of Mynydd-y-Glog. There are further cairns 400m to the north on the summit of Mynydd-y-Glog.

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.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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