In speleology, cave passages formed in the vadose zone tend to be canyon-like in shape, as the water dissolves bedrock on the floor of the passage.
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Leonora's Caves were long believed to be a bottomless pit and it was here where the myth of an underwater cave passage communicating with North Africa emerged.
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A receiving unit on the surface can pinpoint the depth and location of a transmitter in a cave passage by measurement of the geometry of its radio waves.
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Draenen contains a variety of spectacular decorations and some huge passages ( the " War of the Worlds " section is probably the second largest cave passage in Britain ).
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This is caused by the fact that the entire Caney Fork sinks into the limestone river bed and follows cave passages below the river bed to emerge at a large spring.
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The cave was discovered on 13 February 1954, when blasting at one of the working faces opened up a cave passage, and is now choked with sludge waste from the quarry.
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Other attractions in the park include the Deer Cave ( the second largest cave passage in the world ) and the Clearwater Cave ( the longest cave system in Southeast Asia ).
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The cave passages adjoining the Ease Gill main streamway were connected to Link Pot and Pippikin Pot in 1978, and Pippikin was itself connected to Lost John's Cave by diving in 1989.
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Boho caves are the seventh longest cave passage system in Northern Ireland and have been designated as an ASSI . They are the only example of a joint-controlled maze cave in Northern Ireland.
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Discovery of new natural entrances is a rare event : the primary mode of discovery involves the pursuit of side passages identified during routine systematic exploration of cave passages entered from known entrances.
