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Making Tracks...
Look closely and see where the Curiosity rover has been roving about inside Gale Crater on Mars, from “Bradbury Landing” to its current location in “Yellowknife Bay.” This shot was taken by the HiRISE camera on board the Mars Reconnaissance Orbiter on January 2, 2013.
“This image shows the entire distance traveled from the landing site (dark smudge at left) to its location as of 2 January 2013 (the rover is bright feature at right),” wrote HiRISE principal investigator Alfred McEwen on the HiRISE website. “The tracks are not seen where the rover has recently driven over the lighter-toned surface, which may be more indurated [hardened] than the darker soil.”
Read more: http://www.universetoday.com/99472/curiositys-rambling-tracks-visible-from-mars-orbit/