Ogof Ffynnon Ddu - The Cave of the Black Spring maps and guides limestone formations

limestone formations

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

and tectonic movements shaped the landscape we see today

and beloved ‘People’s Park’

Located beneath the moors of South Wales

Ogof Ffynnon Ddu - The Cave of the Black Spring maps and guides limestone formationsOgof 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