This site is best viewed at 1280x1024
Seasonal Changes on Mars: Ancient Martian Civilization Evidence jf3809jv
Thanks to JPL/NASA/ MALlN/ASU/ ESA for this original Mars image.
The original NASA Mars image can be viewed at http://www.msss.com/moc_gallery/e07_e12/images/E11/E1102281.html
If this image shows the dethawing of dunes in the Martian polar region, it looks very different than the dethawing process in many NASA images.
And inverted...
Welcome to Marsruins