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Cof Cymru: National Historic Assets of Wales · Wales

Earthwork on Graig Fawr

Pontardulais, Swansea, Wales

A scheduled monument in Pontardulais, Swansea, recorded as Hillfort (Prehistoric).

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Earthwork on Graig Fawr, Pontardulais, Swansea, 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
Hillfort
Period
Prehistoric
Date of designation
8 December 1976
Community
Pontardulais
Unitary authority
Swansea
Country
Wales
Coordinates (centre of the scheduled area)
51.74329, -4.00278
SAM number
GM386
Cadw record number
3577

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)
  • 1891 · Sheet 10. Ordnance Survey of England and Wales. . (David Rumsey Map Collection, Stanford Libraries)
  • 1898 · 230 Ammanford (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1898 · 230 Ammanford (Outline) (David Rumsey Map Collection, Stanford Libraries)
  • 1920 · Sheet 100. Llanelly. (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 an earthwork enclosure. The date or precise nature of the enclosure is unknown, but it is likely to be later prehistoric (c. 800BC - AD74). Situated on the summit of moorland 270m above OD, it is D-shaped and enclosed by a single bank and ditch. The surrounding bank is 0.3m to 0.5m high and flattened on north-east side where there is more level approach along the crest of the ridge. A trackway, slightly embanked, bends along this crest and into the fort, but is probably recent.

The monument is of national importance for its potential to enhance our knowledge of later prehistoric defensive organisation and settlement. The site forms an important element within the wider later prehistoric context and within the surrounding landscape. The site is well preserved and retains considerable archaeological potential. There is a strong probability of the presence of evidence relating to chronology, building techniques and functional detail.

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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