Blue John Cavern

Mam Tor
Hope Valley
S33 8WA

The Blue John Cavern in the Peak District is a series of caverns considered to be the finest range in Great Britain.

Cavern tours are popular amongst tourists and schools due to the caverns ability to show limestone strata and how the limestone itself had much earlier been formed by the deposits on the floors of great oceans which have long since receded, as the fossilised remains of marine animals now show.