Dripstone cave
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Dripstone caves are a type of solutional caves, mostly in limestone, called so for the typical Dripstones, hanging from their ceiling, which have been formed by deposition of minerals from water dripping down. Some dripstone caves, because of their size and beauty, are considered natural wonders and attract many visitors. According to their origin in limestone being solved by flowing water, dripstone caves are typically found in Karst regions.
[edit] Dripstone caves in literature
In The Adventures of Tom Sawyer, Tom and his girlfriend Becky get lost in a dripstone cave.