Ancient Monuments

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Defended Enclosure 350m east of Bank Green Grove

A Scheduled Monument in Llanfihangel Ystrad, Ceredigion

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Latitude: 52.1866 / 52°11'11"N

Longitude: -4.1729 / 4°10'22"W

OS Eastings: 251553

OS Northings: 256486

OS Grid: SN515564

Mapcode National: GBR DM.4CLM

Mapcode Global: VH3K0.M9BL

Entry Name: Defended Enclosure 350m E of Bank Green Grove

Scheduled Date: 2 September 2009

Source: Cadw

Source ID: 1256

Cadw Legacy ID: CD272

Schedule Class: Defence

Category: Enclosure

Period: Prehistoric

County: Ceredigion

Community: Llanfihangel Ystrad

Traditional County: Cardiganshire


The monument, also known as Pen-y-Gaer, comprises the remains of an elongated earthwork defended enclosure and annexe, which probably date to the Iron Age period (c. 800 BC - AD 43). It is located on the summit of a prominent NE-SW aligned ridge above steep NW- and SE-facing slopes. The main enclosure is rectangular in shape and measures 120m NE-SW by a maximum of 50m transversely. A spread bank of shale defends the SW end and measures 0.5m in height and 6m in width. There are slight traces of an outer ditch. The bank at the NE end is similarly defended, but the ditch survives in better condition, measuring 0.5m in depth and 6m in width. The defensive circuit on the NW and SE sides is marked by sharp breaks in slope. Internally, two terraces cut into the S-facing slope may represent house platforms. The sub-rectangular annexe lies immediately to the NE of the main enclosure and measures 60m NW-SE by 55m transversely. It is defined by sharp breaks in slope on the NW and SE sides, and a well-preserved bank on the NE side. The bank measures 2m in height externally and 5m in width. Slight traces of the outer ditch survive.

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 an area around within which related evidence may be expected to survive. It is roughly rectangular in shape on plan and measures 235m NE-SW by 115m transversely.

Source: Cadw

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