Palsa

Rarity: Common

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Notion

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Science and technology

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What Wikipedia says

Palsas are peat mounds with a permanently frozen peat and mineral soil core. They are a typical phenomenon in the polar and subpolar zone of discontinuous permafrost. One of their characteristics is having steep slopes that rise above the mire surface.

Excerpt from the Wikipedia article “Palsa”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Dentren | Talk. Original uploader was Dentren at en.wikipedia, CC BY-SA 3.0, via Wikimedia Commons.