Ancient Monuments

History on the Ground

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Glan-Dwr-Isaf Camp

A Scheduled Monument in Nevern (Nanhyfer), Pembrokeshire (Sir Benfro)

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Latitude: 52.0692 / 52°4'9"N

Longitude: -4.7361 / 4°44'10"W

OS Eastings: 212561

OS Northings: 244740

OS Grid: SN125447

Mapcode National: GBR CW.CXJW

Mapcode Global: VH2MT.V8K2

Entry Name: Glan-Dwr-Isaf Camp

Scheduled Date:

Source: Cadw

Source ID: 2047

Cadw Legacy ID: PE213

Schedule Class: Monument

Category: Enclosure

Period: Prehistoric

County: Pembrokeshire (Sir Benfro)

Community: Nevern (Nanhyfer)

Traditional County: Pembrokeshire


The monument comprises the remains of a defended enclosure, which probably dates to the Iron Age period (c. 800 BC - AD 74, the Roman conquest of Wales), and which is set on a promontory above where a feeder stream enters the Nant Ceibwr. It is naturally well defended by the steep valley sides to the north, west, south and southeast which fall away by 15m. The narrow approach to the promontory on the northeast side is protected by a single rampart. The bank of the rampart rises 3m over the interior and 5m over the ditch. There is a simple entrance through the rampart. The pear-shaped interior measures 90m north east to south west and 30m north west to south east. A depression marking a possible hut circle lies close to the rampart on the southern edge of the interior.

Inland promontory forts are usually located on a ridge or spur with steep slopes on 2 or 3 sides, and artificial ramparts on the level approaches. Alternatively they may have been constructed on a promontory above the confluence of two rivers, or in the bend of a meander.

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.

Source: Cadw

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