Martian avalanches

It gets so cold during the Martian winter that carbon dioxide freezes and sometimes accumulates on fault lines. Then when Martian spring comes, it melts away and sometimes causes an avalanche. And sometimes the HiRISE camera on the Mars Reconnaissance Orbiter gets a picture or two of the avalanche.

The scarp is apparently about 700 meters high, and the avalanche cloud rises about 50 meters. More pictures of Martian avalanches taken by HiRISE are available here.


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