R to @CopernicusEU: The colours are the result of mineral-rich sedimentary layers, creating a vivid palette of reds, purples, greens, and yellows.

Learn more:
https://www.copernicus.eu/en/media/image-day-gallery/serrania-de-hornocal-mountain-14-colours-argentina
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https://nitter.privacydev.net/CopernicusEU/status/1875822069176529369#m