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Sinkhole - 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 …
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 the subsurface. Sinkholes are most common in what geologists call, “karst terrain.”
Sinkholes | U.S. Geological Survey - USGS.gov
Jun 9, 2018 · A sinkhole is an area of ground that has no natural external surface drainage--when it rains, the water stays inside the sinkhole and typically drains into the subsurface. Sinkholes can vary from a few feet to hundreds of acres and from less than 1 to more than 100 feet deep.
What causes sinkholes, and why are they so dangerous? - USA …
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 surface and ...
What is a sinkhole? A geotechnical engineer explains - The …
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 over a long period.
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 with...
Sinkhole - National Geographic Society
Jul 3, 2024 · A sinkhole is a hole in the ground that forms when water dissolves surface rock. This sinkhole sits in the Yucatan Peninsula in Mexico. Natural sinkholes in limestone, like this one, are called cenotes. People of Mexico have been using the …
How Sinkholes Work - HowStuffWorks
Nov 2, 2023 · Also called sinks, sinkholes owe much to water. A sinkhole usually forms by erosion caused by frequent exposure to water. It comes down to the type of rocks underlying the soil (as opposed to the soil above called the overburden).
Sinkholes: Causes, Types, Formation and Effects
As the name suggests, sinkholes involve land sinking, causing holes on the ground. These depressions or voids form when water erodes an underlying rock layer, particularly in cases where the rock consists of limestone, salt beds, or carbonate rock.
Sinkhole | Karst, Subsidence & Collapse | Britannica
Jan 19, 2025 · 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.