Ancient Monuments

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Enclosure Site on Allt Pen-Gegin-Isaf

A Scheduled Monument in Cwm Gwaun, Pembrokeshire (Sir Benfro)

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Latitude: 51.9698 / 51°58'11"N

Longitude: -4.8672 / 4°52'2"W

OS Eastings: 203140

OS Northings: 234035

OS Grid: SN031340

Mapcode National: GBR CQ.L1CB

Mapcode Global: VH1QP.LR79

Entry Name: Enclosure Site on Allt Pen-Gegin-Isaf

Scheduled Date: 12 September 1997

Source: Cadw

Source ID: 3873

Cadw Legacy ID: PE486

Schedule Class: Monument

Category: Enclosure

Period: Prehistoric

County: Pembrokeshire (Sir Benfro)

Community: Cwm Gwaun

Traditional County: Pembrokeshire


The monument comprises the remains of an earthwork/stone-built enclosure. The date or precise nature of the enclosure is unknown, but it is likely to be later prehistoric or medieval. It is situated on a broad terrace part way up the northern side of Cwm Gwaun and is protected to the south by a steep natural slope, heightened by a shallow rock-cut ditch and tall inner bank. There is a small outwork in the south-west corner and bank and ditch on the north and east sides. The interior is scooped out of the hillside and measures about 40m by 35m. It is one of two at the location. 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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