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Cof Cymru: National Historic Assets of Wales · Wales

Dolbenmaen Castle Mound

Dolbenmaen, Gwynedd, Wales

A scheduled monument in Dolbenmaen, Gwynedd, recorded as Motte (Medieval).

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Dolbenmaen Castle Mound, Gwynedd, 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
Motte
Period
Medieval
Community
Dolbenmaen
Unitary authority
Gwynedd
Country
Wales
Coordinates (centre of the scheduled area)
52.96413, -4.22509
SAM number
CN063
Cadw record number
564

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 1795 map "To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most humbly inscribed by his obedient humble servant" (Llyfrgell Genedlaethol Cymru – The National Library of Wales).

Historical maps covering this location

  • 1795 · To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most… (Llyfrgell Genedlaethol Cymru – The National Library of Wales)
  • 1883 · Watershed map England, Wales 3. (David Rumsey Map Collection, Stanford Libraries)
  • 1896 · Sheet 7. Ordnance Survey of England and Wales. (David Rumsey Map Collection, Stanford Libraries)
  • 1899 · 118 Nevin (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)

Get directions ↗

This record in Cadw's own full report ↗

Cadw's description

The following provides a general description of the Scheduled Monument.

A motte built by the side of the Afon Dwyfor, part of which has been destroyed by the farmhouse and buildings which lie on the W side. It stands about 6 m high and is 36 m in diameter at the base. The top measures 8 m N - S and 11 m W - E. A masonry wall 0.75 - 1 m high encircles the top. The area inside this wall has been damaged by trees which have grown and subsequently fallen, creating large holes. The same thing has happened on the sides of the motte. The ditch, visible on the S and W sides, is between 0.75 and 1 m deep, and about 7 m wide.

The monument is of national importance for its potential to enhance our knowledge of medieval defence. It retains significant archaeological potential, with a strong probability of the presence of associated archaeological features and deposits. The structures themselves may be expected to contain archaeological information concerning chronology and building techniques.

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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