In this beautiful VIS image, taken by the NASA - Mars Odyssey Orbiter on May, 24th, 2002, and during its 1.957th orbit around the Red Planet, we can see a really small portion of the Greatest Outflow Channels of Mars, which is known as Reull Vallis (and it is centered at 42,6° South Latitude and 255,9° Wast Longitude).
Reull Vallis is a long Martian Valley (approx. 945 Km - such as about 586,84 miles) that appears (in Planetary Scientists' opinion) to have been carved by Water. Reull Vallis runs Westward into Hellas Planitia and it was so named after the Gaelic word for "Planet".
Latitude (centered): 40,0991° South
Longitude (centered): 99,1020° East
This image (which is an Original Mars Odyssey Orbiter false colors and Map-Projected frame published on the NASA - Planetary Photojournal with the ID n. PIA 18987) has been additionally processed, magnified to aid the visibility of the details, 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.