In the image above from earlier this month, the Mars Reconnaissance Orbiter is looking down on Mars' surface and caught a shot of the Curiosity Rover as it explored the surface of the planet.  Here is the story from 
NASA's Jet Propulsion Laboratory:
 
NASA's Curiosity Mars rover and tracks from its driving are visible 
in this view from orbit, acquired on April 11, 2014, by the High 
Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars 
Reconnaissance Orbiter.
The rover is near the largest butte in 
the lower left quadrant of the image, at about a two o'clock position 
relative to the butte. It appears bright blue in the exaggerated color 
of this image.
The multi-layered location filling much of the left
 half of this image is called "the Kimberley." Curiosity's science team 
chose it, based on other HiRISE images, as a potential gold mine for the
 rover mission. Black gold, that is, as organic material that, if found 
at the Kimberley could be a biomarker (sign of past life) -- the holy 
grail of Mars exploration.
Curiosity entered the area included in this 
image on March 12, along the tracks visible near the upper left corner. 
The distance between parallel wheel tracks is about 9 feet (2.7 meters).
 The area included in the image is about 1,200 feet (about 365 meters) 
wide. This view is an enhanced-color product from HiRISE observation 
ESP_036128_1755, available at the HiRISE website at http://uahirise.org/releases/msl-kimberley.php.
 The exaggerated color, to make differences in Mars surface materials 
more apparent, makes Curiosity appear bluer than the rover really looks.
 A stereo view combining information from this observation with 
topography derived from earlier HiRISE observations, for a 
three-dimensional appearance, is at PIA18082. 
Image Credit: 
NASA/JPL-Caltech/Univ. of Arizona