Ancient Monuments

History on the Ground

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Pen y Ddinas Camp

A Scheduled Monument in Dyffryn Ardudwy, Gwynedd

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Latitude: 52.7673 / 52°46'2"N

Longitude: -4.0675 / 4°4'2"W

OS Eastings: 260606

OS Northings: 320858

OS Grid: SH606208

Mapcode National: GBR 5S.YNFZ

Mapcode Global: WH56D.HPBW

Entry Name: Pen y Ddinas Camp

Scheduled Date:

Source: Cadw

Source ID: 2475

Cadw Legacy ID: ME076

Schedule Class: Defence

Category: Hillfort

Period: Prehistoric

County: Gwynedd

Community: Dyffryn Ardudwy

Traditional County: Merionethshire


The monument comprises the remains of an inner, oval stone built enclosure with additional defences to the E, N and W, which may be earlier in date. The interior does not appear to have been ploughed in recent times but is singularly devoid of traces of habitation. The stone bank is well preserved, particularly to the W where the inturned entrance can be clearly traced, although the 'guardroom' is now obscured by rubble. The outer features are also well preserved and can be clearly traced with the aid of Gresham's plan.

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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