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Cof Cymru: National Historic Assets of Wales · Wales

Castell Prysor

Trawsfynydd, Gwynedd, Wales

The record

Designation
Scheduled monument
Site type
Motte and Bailey
Period
Medieval
Community
Trawsfynydd
Unitary authority
Gwynedd
Country
Wales
Coordinates (centre of the scheduled area)
52.91486, -3.84874
SAM number
ME045
Cadw record number
3206

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 1608 "(13) Cambriae Typus." (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 Monument.

A motte and bailey with the foundations of rectangular structures and enclosures NE and W of the motte.

The top of the motte stands some 9m above the level of the bailey, and is 12m in diameter. The top has been severely damaged by trenches dug across it; the principal trench is 6m across and nearly 2m deep.

The body of the motte is mainly of stone, and revetted stonework is still visible on the sides of the motte, although blackthorn obscures much of this work. The bailey also makes use of natural outcrops of rock, and is defended on the W by a bank 3m wide and 0.6m high. There is a small, rock-cut pool in the SW corner of the bailey.

The monument is of national importance for its potential to enhance our knowledge of medieval settlement and 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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