Find out what Blue John Stone actually is at a place it is mined. On the self guided audio tour (on your own Smartphone) of the cavern you will see the largest deposits of Blue John Stone in situ, and some of the finest stalactites in the Peak Distri...

The self-guided Audio on your own smartphone takes you on the Tour of the Cavern, and you can stop and start as you go along to answer the Rocks Trail quiz. You will see the Underground Wonderland of stalactites and stalagmites, rocks, minerals and f...