No one knows if there is life on Mars, but the planet itself sure behaves like a living thing, displaying a startling variety of faces. Puts me in mind of that wonderful TS Eliot line: "I must borrow every changing shape to find expression."
Maybe we need to broaden our definition of life.
This first one, reminiscent of zebra stripes, of tattoos, is from the sand dunes in the middle latitudes.
This one is from one of the poles, right after an avalanche, which evidently accounts for the variations in color. Looks less like a landscape than a painting of a landscape. Feels like you could dive right in to those deep blues.
Got these at either Space Gizmo or Bad Astronomy, don't remember which; they've been in my pocket awhile. Ultimately, of course, they are from the Mars Reconnaissance Orbiter.