| Blue John Cavern | |
|---|---|
 Blue John seams in the cavern | |
| Location | Castleton, Derbyshire England |
| Coordinates | 53°20′44″N 1°48′13″W / 53.3456°N 1.8035°W |
| Geology | Blue John |
| Entrances | 1 |
The Blue John Cavern is one of the four show caves in Castleton, Derbyshire, England.[1] The others are Peak Cavern, Treak Cliff Cavern and Speedwell Cavern.
- ^ "Blue John Cavern". castleton.co.uk. Peak Hideaways. Archived from the original on 21 January 2017. Retrieved 22 January 2017.