Ancient Monuments

History on the Ground

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Pen-y-Gaer Camp

A Scheduled Monument in Llanidloes Without (Llanidloes Allanol), Powys

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Latitude: 52.4689 / 52°28'8"N

Longitude: -3.6085 / 3°36'30"W

OS Eastings: 290833

OS Northings: 286882

OS Grid: SN908868

Mapcode National: GBR 9D.KG7K

Mapcode Global: VH5BW.D6QN

Entry Name: Pen-y-Gaer Camp

Scheduled Date:

Source: Cadw

Source ID: 2990

Cadw Legacy ID: MG085

Schedule Class: Defence

Category: Hillfort

Period: Prehistoric

County: Powys

Community: Llanidloes Without (Llanidloes Allanol)

Traditional County: Montgomeryshire


The monument comprises the remains of a hillfort, which probably dates to the Iron Age period (c. 800 BC - AD 74, the Roman conquest of Wales). Hillforts are usually located on hilltops and surrounded by a single or multiple earthworks of massive proportions. Hillforts must have formed symbols of power within the landscape, while their function may have had as much to do with ostentation and display as defence. Pen-y-Gaer Camp comprises a circular enclosure on the summit of Pen y Gaer. There is no sign of a surrounding ditch, but the whole summit is surrounded by a collapsed, dry-stone wall which has spread to a width of c. 10-13m and up to 0.5m high internally, although in most places it is level with the interior. The enclosure measures c. 68m N-S, internally, and 44m transversely, and encloses an area of c. 0.3ha. An entrance is visible in the south. There are very steep natural slopes to east and west, with more gentle approaches to north and south, defended by outworks. A modern cairn 4m x 1.4m high occupies the highest point in the SW corner of the enclosure.

The monument is of national importance for its potential to enhance our knowledge of later prehistoric defensive organisation and settlement. The site forms an important element within the wider later prehistoric context and within the surrounding landscape. The site is well preserved and retains considerable archaeological potential. There is a strong probability of the presence of evidence relating 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

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