Martian avalanche

Spring is approaching us here in the northern hemisphere on Earth once again, and we are experiencing the annual thaw of the winter ice.
Spring is approaching the northern hemisphere of Mars as well, and with it comes the thaw of carbon dioxide ice. Some of that dry ice sits at the tops of cliffs, and when it thaws it dislodges the material there. The rock and debris on Mars then does the same thing it would do on Earth: it falls. Fast.
And when it does, you get this slice of Martian awesomeness:



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