Dallol, in Ethiopia's Danakil Depression, below sea level Yellowstone's pools get their colors from microbes. These come from iron oxidizing in brines hotter than 108 °C with a pH below zero, and the palette shifts within days as springs die and new ones open [📷 A.Savin]
Image from Mees (@oldneeye)

Nov 11, 2026 · 7:49 PM UTC

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