Ancient Monuments

History on the Ground

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Bwlch y Clawdd Dyke

A Scheduled Monument in Treorchy (Treorci), Rhondda, Cynon, Taff (Rhondda Cynon Taf)

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Latitude: 51.6391 / 51°38'20"N

Longitude: -3.533 / 3°31'58"W

OS Eastings: 294011

OS Northings: 194478

OS Grid: SS940944

Mapcode National: GBR HG.7VDL

Mapcode Global: VH5GZ.Q239

Entry Name: Bwlch y Clawdd Dyke

Scheduled Date: 21 November 1996

Source: Cadw

Source ID: 1459

Cadw Legacy ID: GM500

Schedule Class: Monument

Category: Linear earthwork

Period: Unknown

County: Rhondda, Cynon, Taff (Rhondda Cynon Taf)

Community: Treorchy (Treorci)

Built-Up Area: Treorchy

Traditional County: Glamorgan


The monument consists of a linear earthwork, a substantial bank and ditch forming a major boundary between two adjacent landholdings. The dyke is thought to be of early medieval date. Its bank is 4.5m wide and 1.5m high, running for a distance of 200m south-west to north-east across a ridge. The front face may once have been revetted. The north-east half of the dyke has a secondary bank about 12m from it on the outer side of the ditch. The secondary bank is about 2m wide and 0.5m high.

The monument is of national importance for its potential to enhance our knowledge of later prehistoric/medieval defensive oranisation and settlement. It retains significant archaeological potential, with a strong probability of the presence of associated archaeological features and deposits. A linear earthwork 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.

Source: Cadw

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