Peak Cavern, Castleton, Derbyshire, England, also called the Peak Hole or the Devil's Arse, a cave in the Peak District limestone with the largest cave entrance in Britain. 'View in Peak Hole, after passing the first River' 18th century gentleman tourists, being shown the wonders of the cave by guides with candles, amazed by the stalactites. Etching by Isaac Cruikshank (c1764-1811) after the drawing by the English caricaturist George Montard Woodward (c1760-1809) published 1797.