Ancient Monuments

History on the Ground

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Ogof Tan-y-Bryn

A Scheduled Monument in Llandudno, Conwy

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Latitude: 53.3177 / 53°19'3"N

Longitude: -3.8037 / 3°48'13"W

OS Eastings: 279943

OS Northings: 381604

OS Grid: SH799816

Mapcode National: GBR 1ZW2.9D

Mapcode Global: WH64Y.JVYY

Entry Name: Ogof Tan-y-Bryn

Scheduled Date:

Source: Cadw

Source ID: 3405

Cadw Legacy ID: CN204

Schedule Class: Monument

Category: Cave

Period: Prehistoric

County: Conwy

Community: Llandudno

Built-Up Area: Llandudno

Traditional County: Caernarfonshire


The monument consists of a cave containing archaeological deposits that can date from as early as the Palaeolithic period. A cave may have been used for occupation, storage, burial, refuse, or as a temporary shelter.

The entrance to this limestone cave faces to the north west and is 3m high and 3.4m wide. The cave extends for at least 9m from the entrance. The cave is unexcavated, however, surface finds have included a Palaeolithic flint blade and four flint waste flakes.

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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