Ancient Monuments

History on the Ground

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Tre'r Ceiri Camp

A Scheduled Monument in Llanaelhaearn, Gwynedd

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Latitude: 52.9743 / 52°58'27"N

Longitude: -4.4246 / 4°25'28"W

OS Eastings: 237291

OS Northings: 344639

OS Grid: SH372446

Mapcode National: GBR 59.JRN4

Mapcode Global: WH444.0H9N

Entry Name: Tre'r Ceiri Camp

Scheduled Date: 8 March 1923

Source: Cadw

Source ID: 3415

Cadw Legacy ID: CN028

Schedule Class: Defence

Category: Hillfort

Period: Prehistoric

County: Gwynedd

Community: Llanaelhaearn

Traditional County: Caernarfonshire


Tre'r Ceiri is located on the most easterly peak of Yr Eifl, of which the summit rises to 485m OD. The fort consists of a stone wall enclosing an irregular oval 290m long and with a maximum width of 104m. There is a further wall on the north west, and outside this and between it and the main wall there are irregular groups of small enclosures which continue around the south end of the hillfort. Within the main wall there are remains of about 150 stone huts.

The monument is of national importance for its potential to enhance our knowledge of prehistoric and Romano British settlement and defence. It retains significant archaeological potential, with a strong probability of the presence of associated archaeological features and deposits. The structures themselves may be expected to contain archaeological information concerning chronology and building techniques.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive.

Source: Cadw

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