Ancient Monuments

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Roman Road extending south east 650m from Llyn Hiraethlyn toward Glasgoed

A Scheduled Monument in Trawsfynydd, Gwynedd

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Latitude: 52.9134 / 52°54'48"N

Longitude: -3.868 / 3°52'4"W

OS Eastings: 274489

OS Northings: 336745

OS Grid: SH744367

Mapcode National: GBR 61.NGX1

Mapcode Global: WH55X.K1BB

Entry Name: Roman Road extending SE 650m from Llyn Hiraethlyn toward Glasgoed

Scheduled Date: 11 May 2009

Source: Cadw

Source ID: 1393

Cadw Legacy ID: ME262

Schedule Class: Communications

Category: Road

Period: Roman

County: Gwynedd

Community: Trawsfynydd

Traditional County: Merionethshire


The monument is a well-preserved section of Roman road located between Tomen y Mur and Caer Gai. It comprises a well-preserved earthwork agger, or raised embankment with roadside ditches and a section of terrace road climbing a hillside. The road measures 650m in length, up to 3.5m in width and 0.5m in height, with the road aligned NW-SE. The primary Roman road network was designed and constructed by the Roman army for the purpose of military conquest and rule. Roads were built and used throughout Roman Britain from the mid 1st century AD onwards. In Wales, the majority of the Roman road network dates from the Flavian-Trajanic conquest and garrison (between AD 74 and AD 117).

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 structure itself may be expected to contain archaeological information in regard to chronology and building techniques.

The area scheduled comprises the remains described and an area around them within which related evidence may be expected to survive. It is linear and measures 650m NW-SE by 30m transversely. The S end is located at NGR SH 74705 36637 and the N end is located at SH 74237 36895.

Source: Cadw

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