In this beautiful VIS image, taken by the NASA - Mars Odyssey Orbiter on February, 7h, 2015, and during its 58.336th orbit around the Red Planet, we can see a so-called "Sand Sheet" (---> in other words, a fine Sand Blanket) with extremely Dark Surface Dune Forms (a "Migrating Dunefield" made out of Volcanic Sand and Ashes maybe? In fact, the Inner Slopes of the Impact Crater are not steep at all, if you notice...) which is found in an Unnamed Impact Crater located in the Martian Region known as Noachis Terra.
Latitude (centered): 48,6161° South
Longitude (centered): 34,0534° East
This image (which is a crop taken out from an Original Mars Odyssey Orbiter falsely colored and Map-Projected frame published on the NASA - Planetary Photojournal with the ID n. PIA 19734) 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.