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Cof Cymru: National Historic Assets of Wales · Wales

House Platforms to W of Mynydd Machen

Bedwas, Trethomas and Machen, Caerphilly, Wales

A scheduled monument in Bedwas, Trethomas and Machen, Caerphilly, recorded as House Platform (Medieval).

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of House Platforms to W of Mynydd Machen, Bedwas, Trethomas and Machen, 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
House Platform
Period
Medieval
Date of designation
12 February 2008
Community
Bedwas, Trethomas and Machen
Unitary authority
Caerphilly
Country
Wales
Coordinates (centre of the scheduled area)
51.60426, -3.12493
SAM number
MM337
Cadw record number
1096

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 of two house platforms, probably dating to the medieval or post-medieval periods and situated immediately adjacent to each other in open moorland on the sheltered W-facing upper slopes of Mynydd Machen. The larger, northernmost platform is subrectangular on plan and measures 16.5m from E to W by 9m transversely. It is terraced out on its W end, rising above the slope to a height of about 1m - and is terraced into the slope on its E end to a depth of about 1m. The southernmost platform is also subrectangular on plan and measures 12m from E to W by 6m transversely. It is terraced out on its W end, rising above the slope to a height of about 1m - and is terraced into the slope on its E end to a depth of about 1m.

The settlement presumably represents the remains of seasonal hafotai, the platforms once boasting buildings associated with summer grazing.

The monument is of national importance for its potential to enhance our knowledge of medieval and post medieval land use, settlement and economy. It is a relatively well preserved example of an upland settlement and retains great archaeological potential to enhance our knowledge of medieval and post medieval stock rearing practices in the upland zone, whether as permanent settlement, regular transhumance (such as the hafod system of summer pasture), or intermittent opportunistic expansion.

The area scheduled comprises the remains described and an area around them within which related evidence may be expected to survive. It is rectangular and measures up to 32m from NNE to SSW by up to 26m transversely.

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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