Ancient Monuments

History on the Ground

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Nanna's Cave

A Scheduled Monument in Tenby (Dinbych-y-pysgod), Pembrokeshire (Sir Benfro)

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Latitude: 51.641 / 51°38'27"N

Longitude: -4.6809 / 4°40'51"W

OS Eastings: 214590

OS Northings: 196976

OS Grid: SS145969

Mapcode National: GBR GF.SP8V

Mapcode Global: VH2PZ.T07W

Entry Name: Nanna's Cave

Scheduled Date: 11 September 1986

Source: Cadw

Source ID: 690

Cadw Legacy ID: PE425

Schedule Class: Monument

Category: Cave

Period: Prehistoric

County: Pembrokeshire (Sir Benfro)

Community: Tenby (Dinbych-y-pysgod)

Traditional County: Pembrokeshire


The monument consists of a cave containing archaeological deposits, dating to the palaeolithic period. Nanna's Cave is 3m wide, 3.5m high and 5m deep, situated near the top of coastal cliffs, with an eastern facing entrance. There is a level turf covered platform in front of the cave. Excavations revealed Palaeolithic and mesolithic flint implements, and pottery and implements from the Neolithic, Bronze Age, Iron Age, Roman and Medieval periods were uncovered. The top of the cave is turf covered. 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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