Castleton - Caves

Castleton is noted for its caves, which are open to visitors throughout the year. The most impressive is Peak Cavern, half a mile long. Also of interest is the Speedwell Mine, in which visitors take a boat trip along an underground gallery half a mile long, passing sinter terraces, waterfalls and fantastic stalactite and stalagmite formations. Blue John Mine is reached by way of the Winnats, a steep and narrow ravine 1mile long. This cavern is named after the bluish (sometimes also yellow-tinged) type of feldspar found here, which can also be seen, in many varying shades of color, in Treak Cliff and Treak Cliff Cavern.