Rock glacier

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Notion

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Science and technology

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What Wikipedia says

Rock glaciers are glaciers shielded from melting by a layer of non-icy rocks, allowing them to stay frozen in locations where they would otherwise melt. They consist either of angular rock debris frozen in interstitial ice, former "true" glaciers overlain by a layer of talus, or something in between.

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

Image: Jerzas, CC BY-SA 3.0, via Wikimedia Commons.