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Latitude: 51.9699 / 51°58'11"N
Longitude: -5.0987 / 5°5'55"W
OS Eastings: 187241
OS Northings: 234691
OS Grid: SM872346
Mapcode National: GBR CD.L3YZ
Mapcode Global: VH1QK.KRV8
Entry Name: Castell Coch Promontory Fort (on Penmorfa)
Scheduled Date: 31 March 1976
Source ID: 3337
Cadw Legacy ID: PE393
Schedule Class: Defence
Category: Promontory Fort - coastal
County: Pembrokeshire (Sir Benfro)
Community: Mathry (Mathri)
Traditional County: Pembrokeshire
The monument comprises the remains of a defended enclosure, which probably dates to the Iron Age period (c. 800 BC - AD 43). The enclosure is located on a narrow coastal promontory above the sea that marks part of the defensive circuit. The construction of two lines of ramparts placed across the neck of the promontory on the south divide an area of approximately 150 north to south by 90m east to west from the mainland. The northern end of this slopes steeply down to the sea. The inner rampart bank rises about 1.7m above both the interior and its exterior ditch. The outer bank about 25m south of the inner one and is less substantial. The original entrance lay at the western end of the defences where the inner bank had a slight in-turn; this has since been lost to coastal erosion.
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, layout, 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.
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