Treak Cliff Cavern Castleton, Hope Valley, Derbyshire, S33 8WP
Tel: 01433 620571
Email: [email protected]
URL: www.bluejohnstone.comA fine cave displaying the famous Blue John fluerspar, a beautiful, ornamental mineral found only in Castleton. Treak Cliff Cavern is home to eight of fourteen known varieties of Blue John, mined there for centuries.