+A **sinkhole** is a natural depression or hole in the Earth's surface caused by the collapse of the surface layer. Often forming in areas with [Karst](/wiki/karst) topography, they occur when [Groundwater](/wiki/groundwater) dissolves soluble bedrock, creating underground voids that eventually give way.
+## See also
+- [Geology](/wiki/geology)
+- [Erosion](/wiki/erosion)
+- [Limestone](/wiki/limestone)
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