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Cof Cymru: National Historic Assets of Wales · Wales

Roman Marching Camp (revealed by aerial photography) 500m SSE of Glan-yr-Afon

St. Harmon, Powys, Wales

The record

Designation
Scheduled monument
Site type
Marching Camp
Period
Roman
Community
St. Harmon
Unitary authority
Powys
Country
Wales
Coordinates (centre of the scheduled area)
52.33342, -3.49024
SAM number
RD133
Cadw record number
1961

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 1608 "(13) Cambriae Typus." (David Rumsey Map Collection, Stanford Libraries).

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This record in Cadw's own full report ↗

Cadw's description

The following provides a general description of the Scheduled Ancient Monument.

The monument comprises the remains of a Roman marching camp, probably dating from the conquest of Wales by the Romans in the first century AD (probably around AD 74 - 77). It was built as a temporary camp by a marching army as units of the Roman legions pushed west. The camp occupies a location with views along valleys to the north and west, and measures c.340m north-west to south-east by c.215m, enclosing an area of 7.3ha. Only the south-eastern side and the southern part of the south-western side have been included in the scheduling. The bank in these areas is visible on the ground and stands up to 0.4m high.

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, building techniques and functional detail.

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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