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Latitude: 51.8742 / 51°52'26"N
Longitude: -5.3081 / 5°18'29"W
OS Eastings: 172380
OS Northings: 224683
OS Grid: SM723246
Mapcode National: GBR C4.S01Q
Mapcode Global: VH0TK.Y553
Entry Name: Castell Heinif
Scheduled Date: 8 October 1952
Source ID: 153
Cadw Legacy ID: PE295
Schedule Class: Defence
Category: Promontory Fort - coastal
County: Pembrokeshire (Sir Benfro)
Community: St. David's and the Cathedral Close (Tŷddewi a Chlos y Gadeirlan)
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 sea cliffs 25m high under which lies Ogof Mary a natural arch. The narrow neck by which joins to the mainland on the east is defended by a two curving ramparts c 115m long. The inner bank measures about 2.5m high above the interior and 2.3m above the bottom of the ditch and held a stone revetment. The outer bank is of similar proportions. On the south east side a length of bank of lesser size lies for c 30m between the two main banks where it may have been related to arrangements for an entrance.
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.
Other nearby scheduled monuments