Caving is the exploration, study, conservation and enjoyment of caves and other underground structures. Speleology, caving, potholing, spelunking and urban speleology are all common terms that refer to these activities. Caving is a potentially dangerous extreme sport. It is highly recommended that you contact a local organisation to commence your participation in this fascinating recreation. "Take nothing but pictures, leave nothing but footprints, kill nothing but time."
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The Virtual Cave
A wide-ranging introduction to the geology of caves. Organised by geological feature with pictures and clickable virtual maps.
NSS discussion forum for US cavers including sections for cave diving, news, conservation, equipment, photography, rescue and surveying.
World Cave Database
A list of long and deep caves from all around the world. Listed by depth, length and country.
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