The hills visible in the picture lie in the Mackenzie delta, in northwestern Canada. What are these terrain forms called?
bread roll
pingo
field
plasne
Pingo is a mound of earth-covered ice. Frozen water creates it. These terrain forms are created in areas of long-term permafrost. Most of them lie in the Mackenzie delta.
reach: rather globalAlaskaCanadageographygeology
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