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Cave
Natural void under the Earth's surface / From Wikipedia, the free encyclopedia
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For other uses, see Cave (disambiguation).
"Cavern" redirects here. For other uses, see Cavern (disambiguation).
A cave or cavern is a natural void under the Earth's surface.[1] Caves often form by the weathering of rock and often extend deep underground. Exogene caves are smaller openings that extend a relatively short distance underground (such as rock shelters). Caves which extend further underground than the opening is wide are called endogene caves.[2][3]
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Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called caving, potholing, or spelunking.