About Ogof Ffynnon Ddu

Interesting Places, Natural, Geological Formations, Caves

Ogof Ffynnon Ddu (Welsh for Cave of the Black Spring), also known informally as OFD, is a cave under a hillside in the area surrounding Penwyllt in the Upper Swansea Valley in South Wales. It is the second longest cave in Wales and the deepest in the United Kingdom.

Source From: Wikipedia

Powys, Wales, United Kingdom, SA9 1GQ

Nearest places in Ogof Ffynnon Ddu

Craig-y-Nos Castle

Historic Architecture, Architecture, Interesting Places, Other Buildings And Structures

Aberpergwm House

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St Cadoc's Church, Glynneath

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Rheola House

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St Michael's Church, Myddfai

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St Fagan's Church, Trecynon

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Bryn Seion, Trecynon

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Hen-Dy-Cwrdd

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Iron Tram Bridge, Robertstown

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Gadlys Chapel

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Salem, Robertstown

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Gellionnen Chapel

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St John's Church, Aberdare

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Siloa, Aberdare

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Carreg Cennen Castle

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St Elvan's Church, Aberdare

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Bethania, Aberdare

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Calfaria, Aberdare

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Cyfarthfa Castle

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Neath Castle

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Joseph Parry's Cottage

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Llandovery Castle

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Williams Pantycelyn Memorial Chapel, Llandovery

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Salem Independent Chapel, Llandovery

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Ebenezer Baptist Chapel, Llandovery

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Parc and Dare Hall

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Canolfan Soar

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Merthyr Synagogue

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St Mary's Church, Llanfair-ar-y-bryn

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St John's Church, Dowlais

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