Old river beds?

• by SpaceBantam

  Does anyone have any idea what these could be?

  Posted January 13, 2013 10:49 AM

• by mschwamb scientist, translator

  They do kinda look like river channels but they are carved but something other than water. They are carved into the surface of Mars by carbon dioxide gas trapped under the thawing carbon dioxide ice sheet on the south pole of Mars. You can learn more about what these features are here and here.
  Cheers,
  ~Meg

  Posted January 13, 2013 11:45 AM