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Cof Cymru: National Historic Assets of Wales · Wales

Pen-y-Rhiw Round Cairn

Maesycwmmer, Caerphilly, Wales

A scheduled monument in Maesycwmmer, Caerphilly, recorded as Round Cairn (Prehistoric).

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Pen-y-Rhiw Round Cairn, Maesycwmmer, Caerphilly, with a pin at the register's coordinates
Ordnance Survey six-inch map, 2nd edition (1888–1913), covering this location. Courtesy of the National Library of Scotland. The pin is ours, placed from the register's coordinates.

The record

Designation
Scheduled monument
Site type
Round Cairn
Period
Prehistoric
Date of designation
2 April 1956
Community
Maesycwmmer
Unitary authority
Caerphilly
Country
Wales
Coordinates (centre of the scheduled area)
51.62038, -3.20329
SAM number
MM149
Cadw record number
2388

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

David Rumsey Map Collection, Stanford Libraries

5 historical maps cover this location, the earliest the 1636 map "Cornubia : Devonia, Somersetus, Dorcestria, Wiltonia, Glocestria ..." (David Rumsey Map Collection, Stanford Libraries).

Historical maps covering this location

  • 1636 · Cornubia : Devonia, Somersetus, Dorcestria, Wiltonia, Glocestria ... (David Rumsey Map Collection, Stanford Libraries)
  • 1865 · England and Wales. England No. 6. (David Rumsey Map Collection, Stanford Libraries)
  • 1895 · Sheet 11. Ordnance Survey of England and Wales. (David Rumsey Map Collection, Stanford Libraries)
  • 1906 · 249 Newport (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1913 · Sheet 102. Newport. (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 a burial cairn, probably dating to the Bronze Age (c. 2300 - 800 BC). The cairn is round in plan and measure 13m in diameter and 1m high and is turf covered. In the centre is a square hollow measuring 1.5m by 1.5m and 0.7m deep, within which are two upright slabs, the side slabs of a cist. The hollow contains a number of stones that probably originate from the body of the cairn. On the N side is a large hollow, measuring 2m in diameter and 0.5m deep and to the W of the cairn is an area of quarrying.

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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