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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. Water main break causes sinkhole on U.S. 221 in Spartanburg Co.

    3 days ago · A large water main break on the east side of Spartanburg Friday caused a sinkhole in a busy highway.

  4. Sinkhole caused by water main failure closes lanes on …

    3 days ago · Officials report water lines have been clamped and rerouted.

  5. Sinkhole swallows part of Upstate highway after a 'large' water …

    3 days ago · A sinkhole has caused part of Chesnee Highway in Spartanburg County, South Carolina, to collapse after a "large" water main failure.

  6. Sinkhole | Karst, Subsidence & Collapse | Britannica

    3 days ago · Sinkhole, topographic depression formed when underlying limestone bedrock is dissolved by groundwater. It is considered the most-fundamental structure of karst topography.

  7. What causes a sinkhole to form? - National Geographic

    Sinkholes typically form when naturally acidic rainwater erodes underlying bedrock, creating damage beneath the surface. Their formation is most common in easily erodible karst terrains …

  8. 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 …

  9. 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 …

  10. 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, …