Dan yr Ogof
Brecon Beacons, Powys
In 1912 two brothers, Tommy and Jeff Morgan, explored this cave system armed with candles, a shotgun and a coracle to cross underground lakes. They found miles of passages and beautiful formations.
Read the full story, see it on the map, get directions and find what else is nearby in the free Hidden Britain Atlas map.
- When
- Explored 1912
- Where
- 51.8300, -3.6800
- Group
- Caves & grottoes
Visiting
Open in season, with a dinosaur park outside.

The Ledger of Lost Britain
The Romans arrived in AD 43. For most people that is where the history of Britain begins. But by the time the legions landed, people had already been living on these islands for thousands of years. They had hunted, farmed, mined flint, dragged stones across the country, raised a hill by hand, and buried their dead in great tombs. They left no written words. What they left was the ground itself. Every place in this book can be visited, or has been dug up, or is in a museum.
Nearby mysteries
- Ogof Ffynnon DduCave or grotto · Penwyllt, Powys · 1 mile away
- The Lady of Llyn y Fan FachDragon or monster · Black Mountain, Carmarthenshire · 4 miles away
- Porth yr OgofCave or grotto · Near Ystradfellte, Powys · 6 miles away
- Y PigwnRoman Britain · Near Trecastle, Powys · 10 miles away
- Carreg Cennen CastleCastle or abbey · Near Llandeilo, Carmarthenshire · 11 miles away
- Brecon GaerRoman Britain · Near Brecon, Powys · 14 miles away