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Cof Cymru: National Historic Assets of Wales · Wales

Earthwork on Kilvey Hill

St. Thomas, Swansea, Wales

A scheduled monument in St. Thomas, Swansea, recorded as Enclosure (Prehistoric).

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Earthwork on Kilvey Hill, St. Thomas, 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
Enclosure
Period
Prehistoric
Date of designation
24 March 1968
Community
St. Thomas
Unitary authority
Swansea
Country
Wales
Coordinates (centre of the scheduled area)
51.63556, -3.91760
SAM number
GM315
Cadw record number
3742

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)
  • 1637 · The fourth table of England. Cornub. Devonia, Somerset etc. (David Rumsey Map Collection, Stanford Libraries)
  • 1865 · England and Wales. England No. 6. (David Rumsey Map Collection, Stanford Libraries)
  • 1891 · Sheet 10. Ordnance Survey of England and Wales. . (David Rumsey Map Collection, Stanford Libraries)
  • 1897 · 247 Swansea (Hills) (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 a Romano-British enclosure dating to the Roman period (AD 74 - 410). The embanked enclosure is roughly oval on plan, measuring 63m east-west by 50m north-south. It is situated on level ground 110 above OD on the north side of Kilvey Hill.

The area enclosed is approximately 0.25 ha. The enclosure is best preserved on the western side where it is defined by a bank 0.50m high, following a regular curve and fronted by a slight shallow ditch. The overall width of the bank and ditch combined being 7m on this side. Along the northern side the bank has been truncated by a later field boundary. On the southern side the bank is very slight, no more than 0.20m high and spread to approximately 10m in width. On the eastern side it is absent altogether.

Excavation in 1968 discovered a bank on each side of the ditch, which was originally 3m wide and 1.5m deep, with a flat bottom and steep sides. A sherd of Samian bowl, c. AD 125-150 was found beneath the inner bank.

The monument is of national importance for its potential to enhance our knowledge of Romano-British rural settlement and social organisation. The monument forms an important element within the wider context of Romano-British society in Wales and the structure itself may be expected to contain archaeological information in regard to chronology, building techniques and functional detail. The importance of the site is further enhanced by its demonstrable potential to contain a varied finds assemblage.

The area scheduled comprises the remains described and an area 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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