Ancient Monuments

History on the Ground

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Twmpan Castle Mound

A Scheduled Monument in Llangors (Llan-gors), Powys

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Latitude: 51.9228 / 51°55'22"N

Longitude: -3.2727 / 3°16'21"W

OS Eastings: 312570

OS Northings: 225688

OS Grid: SO125256

Mapcode National: GBR YV.P0TF

Mapcode Global: VH6C1.7X5V

Entry Name: Twmpan Castle Mound

Scheduled Date:

Source: Cadw

Source ID: 1722

Cadw Legacy ID: BR054

Schedule Class: Defence

Category: Motte

Period: Medieval

County: Powys

Community: Llangors (Llan-gors)

Traditional County: Brecknockshire


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. The motte is a steep-sided circular mound 3.5m high on the north side, 2.5m high on the south side with a flat summit 12m in diameter. There is no evidence for a ditch surrounding the motte, or for an outer bailey. A small-scale excavation carried out in the 1950s revealed the structure of the mound to be a core of slabs of sandstone covered by a layer of clay.

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.

Source: Cadw

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