In this truly beautiful VIS image, taken by the NASA - Mars Odyssey Orbiter on February, 16th, 2010, and during its 36.269th orbit around the Red Planet, we can see a (relatively) small portion of the Dusty and very ancient Martian Region known as Arabia Terra. Even in this picture, The (relatively) dark gray tone of some large portions of the Ground (here located to the Western side of the frame) is often associated, as you should already know, with the presence, on the Surface, of large amounts of Basaltic (such as Volcanic, in origin) Sand.
Latitude (centered): 11,7556° South
Longitude (centered): 357,5290° East
This image (which is an Original Mars Odyssey Orbiter falsely colored and Map Projected frame published on the NASA - Planetary Photojournal with the ID n. PIA 20597) has been additionally processed, magnified to aid the visibility of the details, extra-contrast enhanced and sharpened, Gamma corrected and then re-colorized in Absolute Natural Colors (such as the colors that a normal human eye would actually perceive if someone were onboard the NASA - Mars Odyssey Orbiter and then looked down, towards the Surface of Mars), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team.