Interesting hemispherical structure surrounded by the straight members. I think JPL/NASA hit the jackpot with this location. -- E.J.
NASA, just an illusion
I had to draw a few lines to highlight how unique this area is. This area is very different than it seems at first glance.In fact this is masterpiece of disguise bearings by NASA.
http://photojournal.jpl.nasa.gov/jpeg/PIA16105.jpg