Ancient Monuments

History on the Ground

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Coelbren Fort

A Scheduled Monument in Tawe-Uchaf, Powys

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Latitude: 51.7835 / 51°47'0"N

Longitude: -3.6551 / 3°39'18"W

OS Eastings: 285926

OS Northings: 210727

OS Grid: SN859107

Mapcode National: GBR YB.YVBM

Mapcode Global: VH5G4.LFKL

Entry Name: Coelbren Fort

Scheduled Date: 30 November 1936

Source: Cadw

Source ID: 2874

Cadw Legacy ID: GM146

Schedule Class: Defence

Category: Fort

Period: Roman

County: Powys

Community: Tawe-Uchaf

Traditional County: Glamorgan


The monument consists of the remains of a medium-sized auxiliary fort dating from c. AD 75 (Roman period). It is located on the Roman road from Neath to Brecon. It is best preserved on the west side where surrounding bank and two outer ditches are clearly visible. Excavations revealed a standard layout, with timber buildings inside. To the south are the remains of a probably earlier large marching camp (GM343). Roads can be traced leading to the south and east of the fort. The fort was abandoned AD 140-50.

The monument is of national importance for its potential to enhance our knowledge of Roman military organisation. The monument forms an important element within the wider context of the Roman occupation of Wales and the structures may contain well preserved archaeological evidence concerning chronology, layout and building techniques.

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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