Ancient Monuments

History on the Ground

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Caer Engan

A Scheduled Monument in Llanllyfni, Gwynedd

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Latitude: 53.049 / 53°2'56"N

Longitude: -4.2738 / 4°16'25"W

OS Eastings: 247679

OS Northings: 352605

OS Grid: SH476526

Mapcode National: GBR 5J.CSC8

Mapcode Global: WH43T.BM3G

Entry Name: Caer Engan

Scheduled Date:

Source: Cadw

Source ID: 2441

Cadw Legacy ID: CN148

Schedule Class: Defence

Category: Hillfort

Period: Prehistoric

County: Gwynedd

Community: Llanllyfni

Built-Up Area: Penygroes

Traditional County: Caernarfonshire


The monument comprises the remains of a Camp occupying a rocky knoll, defended by a double rampart best preserved on the W and E. An enclosure 120m by 64m, enclosed within a double rampart. The ramparts make use of natural outcrops and shelfs, and these are supplemented by artificial banks of earth.

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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