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  1. Sinkhole - Wikipedia

    A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer.

  2. What is a sinkhole? | U.S. Geological Survey - USGS.gov

    A sinkhole is a depression in the ground that has no natural external surface drainage. Basically, this means that when it rains, all of the water stays inside the sinkhole and typically drains into …

  3. Sinkholes - Florida Department of Environmental Protection

    Sinkholes are a common feature of Florida's landscape. They are only one of many kinds of karst landforms, which include caves, disappearing streams, springs and underground drainage …

  4. Florida Sinkhole Maps – Interactive Map & Risk Zones

    Explore Florida sinkhole maps to check sinkhole-affected parcels, incidents, and risk zones near your home. Your local guide for Florida sinkhole awareness.

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    • Sinkhole - 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 …

    • What causes sinkholes, and why are they so dangerous?

      Dec 4, 2024 · A sinkhole is a hole or deep depression in the ground that opens up when layers of certain types of rock – usually limestone, carbonate rock and salt beds – dissolve beneath the …

    • Sinkholes: What They Are, How They Form, And Their Potential …

      Mar 9, 2025 · Sinkholes are sudden depressions or holes that appear on the Earth’s surface when the ground collapses. These phenomena can cause significant damage to infrastructure and …

    • Sinkhole Facts - Science Notes and Projects

      Mar 12, 2025 · A sinkhole is a depression or hole in the ground caused by the collapse of a surface layer, often due to the dissolution of underlying soluble rock such as limestone, …

    • What is a sinkhole? A geotechnical engineer explains

      Apr 8, 2024 · Sinkholes happen when a cavity starts to grow underground. It expands over time, but the soil on the surface is strong enough to hold together and form a “ceiling” over the …

    • What causes a sinkhole | Department of Environmental Protection ...

      Karst landscapes develop naturally through the weathering process so a sinkhole can be considered a natural occurence. But, human influence causes sinkholes to occur where they …