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The Use of Caves88
OT Formation of Caves110
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Alps animals bats Berger Cave boulder calcite carbon dioxide Carlsbad cascade cave divers cave exploration cave passages cave river cave roof cave stream cave systems cavers ceiling chamber cliffs climb collapse contain crystals darkness daylight decorated depth English Mendips English Pennines entrance erosion fabulous feet deep feet high finest fissures flooded floor flow flowstone formed France French galleries Gaping Gill gorge guano gypsum helictites Hole huge hundred feet inches Jugoslavia karst karst regions known cave ladder lakes ledge limestone magnificent massive Mendip Hills miles of passage mountain nearly Ogof Ffynnon Ddu phreatic caves Pierre St pitch pools pothole Pyrenees river caves rock sediment shaft show-cave sinkhole southern spectacular springs squeezes stalactites stalactites and stalagmites stalagmites straws stream caves stream passages streamway sump surface troglobites trogloxenes tunnel underground valley Vaucluse vertical visitor walls water-table waterfall Withyhill Cave yards