Merdiani isnt quite so flat after all:
http://qt.exploratorium.edu/mars/opportuni...00P2276R1M1.JPG
A long way off on the horizon though.
Endurance crater is looking pretty impressive now too:
http://qt.exploratorium.edu/mars/opportuni...00P2438L7M1.JPG
http://qt.exploratorium.edu/mars/opportuni...00P2438L7M1.JPG
The walls look very steep, also you can just make out layering in the far wall now.