A lot of the photos in the article sure looked like pingos[1], which are common ... | Hacker News

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		cjensen on March 23, 2017 \| parent \| context \| favorite \| on: Thousands of underground gas bubbles poised to 'ex... A lot of the photos in the article sure looked like pingos[1], which are common in the Arctic and subarctic, rather than something exotic. Horses before Zebras and all that. [1] https://en.wikipedia.org/wiki/Pingo

wcoenen on March 23, 2017 | [–]

Pictures of pingos are shown in the article because some of these craters formed where there were previously pingos. The term is mentioned 6 times in the article.

ceejayoz on March 23, 2017 | [–]

The later photos in the article show very non-pingo large craters with ejecta, though.

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