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  1. Dictionary
    sinkhole
    /ˈsɪŋkhəʊl/

    noun

    • 1. a cavity in the ground, especially in a limestone formation, caused by water erosion and providing a route for surface water to disappear underground.

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  3. en.wikipedia.org › wiki › SinkholeSinkhole - Wikipedia

    A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. The term is sometimes used to refer to doline, enclosed depressions that are also known as shakeholes, and to openings where surface water enters into underground passages known as ponor, swallow hole or swallet.

  4. www.usgs.gov › faqs › what-a-sinkholeWhat is a sinkhole? | U.S. Geological Survey - USGS.gov

    A sinkhole is a depression in the ground with no external drainage, often caused by dissolution of soluble rocks. Learn more about sinkhole formation, types, and effects from the USGS Water Science School.

  5. www.nationalgeographic.org › encyclopedia › sinkholeSinkhole - National Geographic Society

    Jul 3, 2024 · A sinkhole is a hole in the ground that forms when water dissolves surface rock. Often, this surface rock is limestone, which is easily eroded, or worn away, by the movement of water. In a landscape where limestone sits underneath the soil, water from rainfall collects in cracks in the stone. These cracks are called joints.

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  7. www.britannica.com › science › sinkholeSinkhole | Karst, Subsidence & Collapse | Britannica

    Jun 28, 2024 · Sinkhole, topographic depression formed when underlying limestone bedrock is dissolved by groundwater. It is considered the most-fundamental structure of karst topography. Sinkholes vary greatly in area and depth and may be very large.

    • The Editors of Encyclopaedia Britannica

  8. dictionary.cambridge.org › dictionary › englishSINKHOLE | English meaning - Cambridge Dictionary

    A sinkhole is a hole in the ground, especially in limestone rock, that has been formed naturally or by human activity. Learn more about the types, causes and effects of sinkholes, and see how to say them in different languages.

  9. theconversation.com › what-is-a-sinkhole-aWhat is a sinkhole? A geotechnical engineer explains

    Apr 8, 2024 · A sinkhole is basically a hole which appears to suddenly open up in the ground. However, the process that leads to a sinkhole is not so sudden and may have been developing...

  10. www.usgs.gov › science › sinkholesSinkholes | U.S. Geological Survey - USGS.gov

    Jun 9, 2018 · A sinkhole is an area of ground with no natural external drainage, often formed by dissolution or collapse of soluble rocks. Learn about different types of sinkholes, how they affect the land surface and groundwater, and how human activities can induce or worsen them.