In this simply beautiful VIS image, taken by the NASA - Mars Odyssey Orbiter on October, 21st, 2003, and during its 8.216th orbit around the Red Planet, we can see, once again, the so-called "Margin" existing between the Highlands of the Martian Region known as Margaritifer Terra and Eos Chasma.
If you pay attention to the picture, you will be able to see the Highland/Chasma Margin in a position that is a little more toward the South of yesterday's APOD. Note, also, the bright and whitish color that is visible near and on the Edge of the Highland: this probably indicates the existence of a Layer of a (so far, unknown) Material (---> Mineral) located (or deposited) at the top of the so-called "Cliff Face" of the Margin.
Latitude (centered): 12,0912° South
Longitude (centered): 321,7700° East
This image (which is an Original Mars Odyssey Orbiter falsely colored and Map-Projected frame published on the NASA - Planetary Photojournal with the ID n. PIA 19732) 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.