<p>The <b>Peak Cavern</b>, also known as the <b>Devil's Arse</b> , is one of the four <a href="/pages/w/111592808864913">show cave</a>s in <a href="/pages/w/114192571924695">Castleton</a>, <a href="/pages/w/103763662995098">Derbyshire</a>, <a href="/pages/w/105955176103450">England</a>. <a href="/pages/w/135626749804715">Peakshole Water</a> flows through and out of the cave.</p><h2>Overview</h2><p>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. The cave system is the largest in the <a href="/pages/w/112532805426951">Peak District</a>, and the main entrance is the largest cave entrance in Britain. Until 1915 the cave was home to some of Britain's last <a href="http://en.wikipedia.org/wiki/Wikt%3Atroglodyte" class="wikipedia">troglodyte</a>s (the cave-houses at <a href="/pages/w/116605501720294">Kinver Edge</a> near Kidderminster were populated until the 1950s), who lived in houses built inside the cave mouth, and made a living from rope making, while the depths of the cave were known as a haven for bandits. In legend, it was where <a href="/pages/w/113346672048587">thieves' cant</a> was created by a meeting between <a href="http://en.wikipedia.org/wiki/Cock_Lorel" class="wikipedia">Cock Lorel</a>, leader of the <a href="/pages/w/107053695998992">rogues</a> and <a href="http://en.wikipedia.org/wiki/Giles_Hather" class="wikipedia">Giles Hather</a>, the <a href="/pages/w/115590938456172">King of the Gypsies</a>.</p><p>Several passages lead from the entrance, known as "The Vestibule". The only one open to the public is "<a href="/pages/w/115098335171351">Lumbago</a> Walk", named as traversing it requires most adults to stoop. The route continues through two main caverns, "The Great Cave" and "Roger Rain's House", and into a passage, "Pluto's Dining Room". This is the furthest point currently open to the public, but the show cave used to extend considerably further: down "The Devil's Staircase" to "The Halfway House" and then along an <a href="/pages/w/110550929039874">underground stream</a> known as the "Inner Styx", via a series of bridges and under "Five Arches".</p>