Hellfire Caves

The Hellfire Caves (also known as the West Wycombe Caves) are a network of man-made chalk and flint caverns which extend 260m underground. They are situated above the village of West Wycombe, at the southern edge of the Chiltern Hills near High Wycombe in Buckinghamshire, South East England. They were excavated between 1748 and 1752 for Francis Dashwood, 11th Baron le Despencer (2nd Baronet), founder of the Society of Dilettanti and co-founder of the Hellfire Club, whose meetings were held in the caves. The caves have been operating as a tourist attraction since reopening in 1951.

Cave data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).