The Peak Cavern, also known as the Devil's Arse (called so because of the flatulent-sounding noises from inside the cave), is one of the four show cave

Show cave

Show caves — also called tourist caves, public caves, and in the United States, commercial caves — are caves that are managed by a government or commercial organization and made accessible to the general public, usually for an entrance fee...

s in Castleton, Derbyshire

Derbyshire

Derbyshire is a county in the East Midlands of England. A substantial portion of the Peak District National Park lies within Derbyshire. The northern part of Derbyshire overlaps with the Pennines, a famous chain of hills and mountains. The county contains within its boundary of approx...

, England

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

. Peakshole Water

Peakshole Water

Peakshole Water is a stream in the Peak District, Derbyshire named after its source Peak Cavern. It flows through the village of Castleton to join the River Noe in nearby Hope.-References:*...

 flows through and out of the cave.
Unlike the other show caves in the area, Peak Cavern is almost entirely natural; the only artificial part of the cave was blasted to bypass a low tunnel that was only accessible by lying down on a boat.