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Question : 9 of 120
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- Pingos are intrapermafrost ice-cored hills, ranging in height from 3 - 70 m.
- They are typically conical in shape and grow and persist only in permafrost environments, such as the Arctic and subarctic.
- A pingo is a periglacial landform, which is defined as a non-glacial landform or process linked to colder climates.
- Pingo is a dome-shaped hill formed in a permafrost area when the pressure of freezing groundwater pushes up a layer of frozen ground.
- It is estimated that there are more than 11,000 pingos on Earth.
- The Tuktoyaktuk peninsula area has the greatest concentration of pingos in the world with a total of 1,350 pingos.
- Modern pingos occur in the continental tundras and are generally restricted to latitudes of 65° to 75° N.
- The rupture of the overlying material at the top of the pingo exposes the ice to melting and may create a smaller crater and lake.
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