This is just a really fascinating image I found at the HiRISE website. Just take a look at it.
What you see is near the North Pole of Mars. The white is ice. The blue spots are dunes. According to the image information page, the streaks behind the dunes are likely the direction that the wind has blown recently. I frequent the HiRISE website quite often, and many of the pictures are amazing. But for some reason, this one just caught my eye. Impressive and beautiful!
Image Credit: NASA/JPL/University of Arizona