In this VIS nice image, taken by the NASA - Mars Odyssey Orbiter on March, 2nd, 2015, and during its 58.626th orbit around the Red Planet, you can see a small portion of the Her Desher Vallis (---> an ancient River Valley - an Outflow Channel, in fact - found in the Coprates Quadrangle of Mars, and centered at 25,4° South Latitude and 48,0° West Longitude); Her Desher Vallis is about 107 Km (such as approx. 66,447 miles) long and it was was so named after the Egyptian name for Mars. Her Dasher Vallis is located in the Martian Region known as Noachis Terra.
Latitude (centered): 25,3889° South
Longitude (centered): 312,6390° East
This image (which is an Original Mars Odyssey Orbiter b/w and Map-Projected frame published on the NASA - Planetary Photojournal with the ID n. PIA 19446) has been additionally processed, magnified to aid the visibility of the details, contrast enhanced and sharpened, Gamma corrected and then 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.