First color panorama from the Mars Rover:
Opportunity shows a smooth gray hematite surface in
the Meridiani Planum region.

Image credit: NASA/JPL/Cornell

Original TIFF File: http://photojournal.jpl.nasa.gov/tiff/PIA05144.tif
Other TIFF files from Spirit and Opportunity: http://photojournal.jpl.nasa.gov/targetFamily/Mars