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How do water sinkholes form?

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With cover-subsidence sinkholes the bedrock becomes exposed and is gradually worn down over time, with the holes often becoming ponds as the water fills them in. With a cover-collapse sinkhole this same process occurs out of sight. read more

Like all sinkholes, the one in Guatamala City formed when a swath of land collapsed, leaving behind a crater-like depression in the ground. The phenomenon is most common in Florida, Texas, Alabama, Missouri, Kentucky, Tennessee and Pennsylvania, according to the U.S. Geological Survey. read more

Sinkholes may capture surface drainage from running or standing water, but may also form in high and dry places in specific locations. Sinkholes that capture drainage can hold it in large limestone caves. read more

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