Biggest Underground Waterfalls

Height Cave Location Explanation
100m CaveGaping Ghyll Great Britain The Fell Beck drops 100 m from the moor into Gaping Ghyll, Britain's largest cavern, and the fall of the Beck into the pothole is Britain's highest unbroken waterfall.
77m ShowcaveGrotte aux Fées Switzerland has a 77 m high waterfall which is part of the tour. This seems to be the highest underground waterfall in any show cave worldwide.
44m ShowcaveRuby Falls U.S.A. The waterfall is called Ruby Falls, like the show cave, is 44 m high and the highest underground waterfall open to the public in the United States.
42m ShowcaveDyavolsko Garlo Bulgaria contains numerous underground waterfalls, among them the third-highest underground waterfall in any tourist cave of the world, which is 42 m high.
40m ShowcaveGrotte et cascade de Seythenex France The only tourist cave in the Haute Savoie has a 40 m high underground waterfall. Footbridges and staircases enable visitors to walk up to the top of the waterfall.
40m ShowcaveBalma di Rio Martino Italy At the end of the easy accessible part is a 40 m high waterfall.