Warm-season flows on slope

From Mars' Newton crater, at 41.6 degrees south latitude, 202.3 degrees east longitude, the HiRise Camera captured this series of images from early spring of one Mars year to mid-summer of the following year.

During warm seasons, small dark features, called recurring slope lineae, appear and incrementally grow during warm seasons and fade in cold seasons, extend downslope possibly signifying the presence of liquid water.

However, "The flows are not dark because of being wet," said Alfred McEwen of the University of Arizona. "They are dark for some other reason."