Blue John Cavern
Castleton, Derbyshire
Blue John is a beautiful banded stone, purple, blue and yellow, found only in the hills around Castleton. It has been mined here for centuries and carved into bowls, vases and jewellery.
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
- Mined for centuries
- Where
- 53.3440, -1.8020
- Group
- Caves & grottoes
Visiting
Guided tours run daily. Jewellery shops in Castleton sell Blue John.

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
- Speedwell CavernCave or grotto · Castleton, Derbyshire · under a mile away
- Mam TorAncient monument · Castleton, Derbyshire · under a mile away
- Peak CavernCave or grotto · Castleton, Derbyshire · under a mile away
- Mermaid's PoolDragon or monster · Kinder Scout, Derbyshire · 4 miles away
- Derwent and AshoptonLost village · Ladybower Reservoir, Derbyshire · 5 miles away
- Little John's GraveMysterious grave · Hathersage, Derbyshire · 6 miles away