Ancient Monuments

History on the Ground

This site is entirely user-supported. See how you can help.

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

A Scheduled Monument in St. Harmon (Saint Harmon), Powys

We don't have any photos of this monument yet. Why don't you be the first to send us one?

Upload Photo »

Approximate Location Map
Large Map »

If Google Street View is available, the image is from the best available vantage point looking, if possible, towards the location of the monument. Where it is not available, the satellite view is shown instead.


Latitude: 52.3334 / 52°20'0"N

Longitude: -3.4903 / 3°29'24"W

OS Eastings: 298550

OS Northings: 271632

OS Grid: SN985716

Mapcode National: GBR 9K.V1BJ

Mapcode Global: VH5CJ.GM63

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

Scheduled Date:

Source: Cadw

Source ID: 1961

Cadw Legacy ID: RD133

Schedule Class: Defence

Category: Marching camp

Period: Roman

County: Powys

Community: St. Harmon (Saint Harmon)

Traditional County: Radnorshire


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.

Source: Cadw

Other nearby scheduled monuments is an independent online resource and is not associated with any government department. All government data published here is used under licence. Please do not contact for any queries related to any individual ancient or schedued monument, planning permission related to scheduled monuments or the scheduling process itself. is a Good Stuff website.