On Mars, Spring is coming to the Northern Hemisphere, and the pictured photo shows sand dunes thawing. A larger image is posted on Astronomy Picture of the Day(1).Elsewhere on the Red Planet, an avalanche was photographed for the first time by the Mars Orbiter. More at Space.com(2).

1. http://apod.nasa.gov/apod/ap080303.html
2. http://www.space.com/scienceastronomy/080303-mars-avalanche.html