Ogof Ffynnon Ddu - The Cave of the Black Spring maps and guides From towering standing stones and

From towering standing stones and intricate stone circles to ancient burial chambers

“Ogof Ffynnon Ddu – The Cave of the Black Spring” offers a fascinating deep-dive into one of Britain’s most remarkable subterranean systems

limestone formations

Whether you're planning a visit or exploring from afar

and beloved ‘People’s Park’

Ogof Ffynnon Ddu - The Cave of the Black Spring maps and guides From towering standing stones andOgof Ffynnon Ddu The Cave of the Black Spring offers a fascinating deep dive into one of Britains most remarkable subterranean systems. Located beneath the moors of South Wales, this extraordinary cave stretches over 59 km and plunges to a depth of 274 m, making it the longest and deepest cave in the UK. Through a vivid mix of geology, exploration narrative, and descriptions of dramatic passages, waterfalls, limestone formations, and underground