In this VIS image, taken by the NASA - Mars Odyssey Orbiter on April, 15th, 2014, and during its 54.719th orbit around the Red Planet, we can see, a portion of a North Polar Region known as Hyperborei Cavi (---> from the Latin word Cavus - empty -, which means, in Planetary Science, an Hollow Area and/or an Irregular and Steep-sided Depression, usually found in arrays or clusters).
Here, Hyperborei Cavi is the extremely bright and low Region visible on the right - Dx - upper side of the image.
Large Dunefields are found both in the Low as well as in the Higher Regions located on the left (Sx) side of the image. The Higher Region is part of another North Polar Location known as Hyperborea Lingula (---> from the Latin word Lingula - tongue -, which means, in Planetary Science, an Extension of a Plateau, having Rounded and/or Lobate - in other words: "tongue-like" - Boundaries).
Latitude (centered): 80,2492° North
Longitude (centered): 310,2320° East
This image (which is a crop taken from an Original Mars Odyssey Orbiter b/w and Map-Projected frame published on the NASA - Planetary Photojournal with the ID n. PIA 18497) 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 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.