This image shows two orbital views, arranged side by side, of whirlwinds spinning on calderas at the summits of volcanoes. On the left is Arsia Mons; on the right is Olympus Mons. Above the calderas are thin veils of water-ice clouds. On the left, the clouds radiate outward in a counterclockwise, spiral pattern like the spiral storm below.
Image Credit: NASA/JPL-Caltech/MSSS
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