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Cof Cymru: National Historic Assets of Wales · Wales

The Giant's Cave, Piercefield

St. Arvans, Monmouthshire, Wales

A scheduled monument in St. Arvans, Monmouthshire, recorded as Cave (Post Medieval/Modern).

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of The Giant's Cave, Piercefield, St. Arvans, Monmouthshire, 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
Cave
Period
Post Medieval/Modern
Date of designation
4 August 2000
Community
St. Arvans
Unitary authority
Monmouthshire
Country
Wales
Coordinates (centre of the scheduled area)
51.66331, -2.68878
SAM number
MM282
Cadw record number
850

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 1608 map "(13) Cambriae Typus." (David Rumsey Map Collection, Stanford Libraries).

Historical maps covering this location

  • 1608 · (13) Cambriae Typus. (David Rumsey Map Collection, Stanford Libraries)
  • 1636 · Cornubia : Devonia, Somersetus, Dorcestria, Wiltonia, Glocestria ... (David Rumsey Map Collection, Stanford Libraries)
  • 1895 · Sheet 11. Ordnance Survey of England and Wales. (David Rumsey Map Collection, Stanford Libraries)
  • 1897 · 250 Chepstow (Outline) (David Rumsey Map Collection, Stanford Libraries)
  • 1905 · 250 Chepstow (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 consists of a cave, partly natural but adapted as a principal feature of the famous 18th century Piercefield Walks. Giant’s Cave is a curving tunnel, cut into the rock-face through which the walk passes. The cave comprises a partially natural main chamber, with subsidiary chambers to the east. At the southern entrance is a bastion defined by low walling. The bastion outside the cave gives added interest as the point from which echo effects were created using mounted guns to fire across the Wye Valley. A statue of a giant once stood above one of the entrances.

The monument is of national importance for its potential to enhance our knowledge of prehistoric settlement, ritual and funerary practices. It retains significant archaeological potential, with a strong probability of the presence of associated archaeological features and deposits.

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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