In this really interesting VIS image, taken by the NASA - Mars Odyssey Orbiter on January, 8th, 2015, and during its 57.975th orbit around the Red Planet, we can see a dark and "wedge" shaped Dunefield that is located in a truly unusually-looking (actually, it looks like a "Footprint") Surface Depression (a Collapse Feature, most likely, considering its edges and general characteristics) that is found on the Floor of an Unnamed Impact Crater located in the Martian Region known as Noachis Terra. Extremely well defined Gullies and Seeps (---> small Striations lokking like Avalanches and caused, very often, by the fall, along the Slopes of the Depression, of Dust and small Rocky Material - or even Muddy Water, according to several Planetary Scientists) are also well visible here.
Latitude (centered): 68,32040° South
Longitude (centered): 1,36954° East
This image (which is a crop taken out of an Original Mars Odyssey Orbiter b/w and Map-Projected frame published on the NASA - Planetary Photojournal with the ID n. PIA 19201) 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.