Nice collection of images! Lot's of interesting stuff here. Since they don't seem to have identifiers, I will call them<br /><br />A B<br />C D<br />E F<br />G H<br /><br />A: It's important to realise that this image is actually tilted because it is part of the inside wall of Endurance. The dark material is clearly mobile sand, as it forms ripples. It is probably haematite rich.<br /><br />I agree with bonze, those streaks look really odd. I too find it hard to imagine wind making such straight markings. However they don't really look like the result of flowing water either, as some seem to march straight over low obstacles rather than diverting round them, as you would expect a water flow. Wind-driven flowing sand on a slope can also pool, so is not in itself an indicator of water. An important feature is that the orientation of the streaks is parallel to the many fractures. It is possible they represent subtle structural features in the rock that can trap wind blown sand. So I would prefer wind over water for these but I would say that I am only about 70% confident, so 40% wind, 30% water, 30% unknown. But isn't it a beautiful site?<br /><br />B: Nothing to remarkable here (ecept being on Mars that is). A large radial fracture with coarse gravity-fed talus in in it and a local veneer of fine, haematite sand which is also present in some nearby bedrock depressions.<br /><br />C: Pachydermally weathered (isn't that a lovely expression?) with drifts of winblown haematitic sand round the base, overlying coarser slope material.<br /><br />D: Small drifts of haematitic sand round bedrock blocks in the foreground, sparse wind ripples of the same material on lower crater wall slope beyond.<br /><br />E: A lovely image showing the depression between two large blocks with thin sand over coarse blueberry rich soil. What is nice is the thin ridges on either side of the depression indicating that there has been induration of the edges. Such delicate fretting of rock surface <div class="Discussion_UserSignature"> <p><em>Whether we become a multi-planet species with unlimited horizons, or are forever confined to Earth will be decided in the twenty-first century amid the vast plains, rugged canyons and lofty mountains of Mars</em> Arthur Clarke</p> </div>