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Pingo

A Pingo is a conical or elongated hill, or even a dome-shaped mound consisting of a layer of soil covering a large core of ice. It  occurrs in most areas where permafrost  occurs. A pingo contains massive layers of ice formed under hydrostatic pressure .

There are two types of pingos: Open-system pingos and closed-system pingos. Open system pingos have an open conduit that supplies artesian water. Closed-system pingos are formed from a limited water supply trapped by inward freezing of lakes from their boundaries .

Pingos can be up to 70 metres high.

 

 

 

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