Ancient Monuments

History on the Ground

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Round Cairn North of Mynydd-y-Glog

A Scheduled Monument in Hirwaun, Rhondda, Cynon, Taff (Rhondda Cynon Taf)

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Latitude: 51.7734 / 51°46'24"N

Longitude: -3.4957 / 3°29'44"W

OS Eastings: 296896

OS Northings: 209359

OS Grid: SN968093

Mapcode National: GBR YJ.ZKJX

Mapcode Global: VH5G7.CP9D

Entry Name: Round Cairn North of Mynydd-y-Glog

Scheduled Date: 28 July 1999

Source: Cadw

Source ID: 865

Cadw Legacy ID: GM521

Schedule Class: Religious, Ritual and Funerary

Category: Round cairn

Period: Prehistoric

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

Community: Hirwaun

Traditional County: Brecknockshire


The monument comprises the remains a burial cairn, probably dating to the Bronze Age (c. 2300 - 800 BC). It measures 7.8m diameter and 0.75m high. The cairn was constructed from limestone and sandstone blocks. Two sandstone slabs within the interior may be the remains of a cist. The cairn is surrounded by a kerb of small boulders, some of which measure over 1m in length. It is part of a large cemetery of Bronze Age cairns extending over 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.

Source: Cadw

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