Hotspots under the ice?
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by Djbooth
Is the underlying geology here a dark reddish brown colour? In which case this image gives the impression that ice cover has melted over hotspots in the Martian crust. Or has brown dust been vented to make these blotches?
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by Paul_Johnson
I think the latter. I think you can even see the dark red material under the CO2 ice, turnng the ice pink.
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