How Caves and Caverns Develop
Most large caves form when slightly acidic water slowly dissolves soluble rock, usually limestone, carving out underground passages over thousands of years.
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How Sinkholes Form
A sinkhole forms when an underground void, usually created by the slow dissolution of soluble rock, finally loses enough support that the ground above it collapses.
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Karst Landscapes and Limestone Erosion
Karst landscapes form when slightly acidic rainwater slowly dissolves soluble rock such as limestone, producing caves, sinkholes, disappearing streams, and sometimes dramatic rock towers.
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