Shocking new photographs show the cause of the Martian Avalanches!

No word as yet on what the rovers were running from or why they thought driving off a cliff was the best way out. Rover operators Thelma Johnson and Louise Green could not be reached for comment.

Clearly they were running from al Qaeda, which is why we have to go to Mars, bitches.
we must fight them there so we don’t have to fight them where they actually are!