The Kingsdale Master Cave
Entrances to the system include Rowten Pot, Jingling Pot, Swinsto Cave and Simpson Pot.
The waters from the systems emerge at Keld Head, with many of the passages being flooded and therefore accessible to experienced cave divers only. Indeed the Kingsdale Master Cave includes what is believed to be the longest underwater network of passages as well as the longest single through currently known underground dive in Britain. [There will, however, almost certainly be others still left to be discovered..]