Castleton’s Treak Cliff Cavern has a unique history. Originally a working mine 300 years ago, it’s now a major visitor attraction in the Hope Valley area of Derbyshire. It’s also still a working mine – Castleton is the only place in the world where the beautiful Blue John stone can be found.
You can read more about our history, the cavern and mining in this section.
The Ridley Vein
In 2013, for the first time in over 150 years, a distinctive new vein of Blue John Stone was discovered…
Bats and Spiders
Three species of cave bat living amongst the stalactites, stalagmites and Blue John stone along with a colony of “Orbweavers”, European Cave spiders…
The new Treak Cliff Cavern Interpretation Centre is part-funded by the European Agricultural Fund for Rural Development - to upgrade the visitor offer, by providing new toilets, heritage and interpretation centre. Project reference number: 101006.