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Cof Cymru: National Historic Assets of Wales · Wales

Mounds on the Island

Slebech, Pembrokeshire, Wales

The record

Designation
Scheduled monument
Site type
Mound
Period
Medieval
Date of designation
17 June 1952
Community
Slebech
Unitary authority
Pembrokeshire
Country
Wales
Coordinates (centre of the scheduled area)
51.78988, -4.85318
SAM number
PE276
Cadw record number
462

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

David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1636 "Cornubia : Devonia, Somersetus, Dorcestria, Wiltonia, Glocestria ..." (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 two mounds, artificial elevations of earth and stones thought to date from the 17th-18th centuries and to be a landscape feature of Slebech Park and associated with Slebech Hall The mounds are located on a little peninsula jetting out into the Eastern Cleddau which becomes an island at high tide. The south west mound has an oval flat-topped summit, c.30m E-W by 21m, the north east mound has a tapering oval flat-topped summit, c.28m NE-SW by 13.5m. Both mounds are apparently stone revetted and show traces of masonry foundations.

The monument is of national importance for its potential to enhance our knowledge of construction techniques. It retains significant archaeological potential, with a strong probability of the presence of associated archaeological features and deposits. A mound 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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