In this simulated view of Mars with enhanced color and contrast, darker grey-toned areas of Mars represent grey-black basaltic sands of volcanic origin; lighter patches show clay and sulphate minerals; and the large scar across the planet's face is Valles Marineris.
These photos are heavily exaggerated, with their contrast boosted. It's a great way to visualize the rock and mineral composition in different regions. To the naked eye, Mars would look pretty much as you'd expect. Still really cool though!
You can actually find similar photos of the moon, too. Wallpaper material for sure.
Random crits. Fair and balanced.