While I was browsing Mars on Google Earth, I stumbled upon an interesting feature on one of the slopes of Valles Marineris. The feature seems unique in the sense that I couldn't find any similar element on the valley.
It made me think of sand that just fell from the clifftop or the veins of water that have already been observed on Mars (such as http://www.wired.com/2011/03/happy-birthday-mro/#slideid-591036). But it doesn't seems to match completely with this explanation.
Does any of you have seen this before from current Mars research or from similar phenomenon on Earth?
Google GMail direct link : https://www.google.ch/maps/space/mars/@-14.5528401,-54.2675885,41353a,20y,4.75h,0.44t/data=!3m1!1e3