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Montezuma's Well is a limestone sinkhole. It was an imp0ortant source of water for the Sinagua people from the 100s to the 1300s. It is fed by a warm spring that produces 1.5 million gallons of water each day. The water has a high carbon dioxide content so fish cannot survive in the lake. The water drains through a ...
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Located in Hot Springs, South Dakota, the Mammoth Site is the site of 27000 year old sinkhole and hot springs. Mammoths (mostly Columbian, but a couple of Woolly Mammoths too) occasionally wandered into the sinkhole and became stuck in the mud and unable to escape. As a consequence many mammoth skeletons were preserv...
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Crawford Sink is an anthropogenic sinkhole that sits beside Interstate 70 just west of Russell, Kansas. One of the oil wells in this field had a failed casing that allowed water to seep into soluble salt layers deep underground. Over time the salt dissolved and a cavity opened. Eventually the overlying layers began ...
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- 1911
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