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Cof Cymru: National Historic Assets of Wales · Wales

Tomen y Cefnlloer

Llanfyllin, Powys, Wales

The record

Designation
Scheduled monument
Site type
Motte
Period
Medieval
Community
Llanfyllin
Unitary authority
Powys
Country
Wales
Coordinates (centre of the scheduled area)
52.79354, -3.30838
SAM number
MG026
Cadw record number
3535

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 1795 "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).

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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.

The monument comprises the remains of a motte and ditch, dating to the medieval period (c. 1066 -1540 AD). A motte is a large conical or pyramidal mound of soil and/or stone, usually surrounded by either a wet or dry ditch, and surmounted by a tower constructed of timber or stone. Tomen-y-Cefnlloer is a ditched mound, set towards the west end of an east-west ridge, with steep slopes on the north and south, c.27-28m in diameter and 4.2m high, having a somewhat irregular summit, c.10m by 8.0m. On the east is a scarped bailey platform, c.18m by 22m, there is a further possible platform to the west.

The monument is of national importance for its potential to enhance our knowledge of medieval defensive practices. The monument is well-preserved and an important relic of the medieval landscape. It retains significant archaeological potential, with a strong probability of the presence of both structural evidence and intact associated 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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