This view from the Mast Camera in NASA's Curiosity rover shows sloping buttes and layered outcrops within the "Murray Buttes" region on lower Mount Sharp. NASA/JPL-Caltech/MSSS Finely delineated rock layers within the Murray formation along lower Mount Sharp. NASA/JPL-Caltech/MSSS One expects John Wayne to ride over this ridge at any moment. NASA/JPL-Caltech/MSSS...