Blue John Cavern
This cavern is home to a purplish variety of fluorite known as Blue John. This semi-precious stone, which has been used since Antiquity, is mainly transformed into jewellery. As part of your visit through the succession of lofty caves, admire the superb mineral colourings and the many limestone formations. You will also learn about the terrible working conditions of the early miners here.
Address :Cross, S33 8WH Castleton
Price:10 £ (children 5 £)
guided tour (1hr) in English 9.30am-5pm (5.30pm in Summer; dusk in Winter) - last tour 3.45pm or 4.30pm depending on volume of visitors