Ancient Monuments

History on the Ground

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Ogof Arian Cave

A Scheduled Monument in Moelfre, Isle of Anglesey (Ynys Môn)

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Latitude: 53.3686 / 53°22'6"N

Longitude: -4.2781 / 4°16'41"W

OS Eastings: 248525

OS Northings: 388166

OS Grid: SH485881

Mapcode National: GBR HMTS.T97

Mapcode Global: WH428.8L2F

Entry Name: Ogof Arian Cave

Scheduled Date:

Source: Cadw

Source ID: 2540

Cadw Legacy ID: AN106

Schedule Class: Monument

Category: Cave

Period: Prehistoric

County: Isle of Anglesey (Ynys Môn)

Community: Moelfre

Traditional County: Anglesey


The monument consists of a cave containing archaeological deposits situated on a steep, wooded slope. The outer chamber measures approximately 1.5m to 2m wide and 1.3m high with a small platform outside the entrance. The cave extends 6m into the hillside and beyond this is a smaller passage, measuring approximately 0.5m by 0.8m that extends at least another 25m into the hillside. This is more regularly round in section. The cave has evidence for prehistoric activity associated with it, in the form of scatters of flint.

The monument is of national importance for its potential to enhance our knowledge of prehistoric settlement, ritual and funerary practices. It retains significant archaeological potential, with a strong probability of the presence of associated archaeological features and deposits.

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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