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A frost mound resembling a volcano, being a relatively large and conical mound of soil-covered ice, elevated by hydrostatic pressure of water within or below the permafrost of arctic regions.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a dome-shaped elevation of the earth’s surface, not exceeding 30-40 m in height and 300-400 m in diameter at the base. Pingos are found both isolated and in groups in regions of widespread frozen rocks. They arise during the upheaval of rocks after local accumulation of ice within them, usually in depressions. Pingos may be seasonal or long-term. Depending on the mechanisms of ice accumulation, these mounds are classified as pingos proper or hydrolaccoliths— pingos with ice cores. Local terms for pingos include bulgunniakh (Yakut) and sede (Nenets).

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
This claim was supported by Arcillas, Malcampo, Pingos and Lubrica.
Kawawa (2006) 'Land/resource use conflicts and proposed eviction of livestock keepers in Usangu Basin', report on fact-finding mission submitted to PINGOs Forum.
Frost heave can be so impressively high in Canada that we have a special name for it: "pingo," and we put it on our stamps (Photo 3).
Soare, R.J., Burr, D.M., and Wan Bun Tseung, J.M., 2005, Possible pingos and a periglacial landscape in northwest Utopia Planitia: Icarus, v.
Focusing on regional organisations and their national partners, he presented an NGO 'report card' outlining the diversity of organisations--the BINGOS (big), PINGOS (Pacific Islands) and NANGOS (national), according to whether they were 'barking' (advocacy), 'biting' (pro-active) or working.
The fields, for example, around the village of Camaross in County Wexford are littered with small doughnut-shaped depressions known as pingos. They date from the time during the last Ice Age when the area around Camaross was covered in permafrost and are also to be found in northern Canada, Scandinavia and Russia.
On the refuge coast, den sites are somewhat limited by permafrost; they tend to be located under driftwood piles, in the tops or sides of eskers and pingos or along riverbanks, which usually become snow free earlier than surrounding terrain.