In the upper right corner you see some strange rectangular shapes, with some kind of round feature in it. Makes you think of a city-map with a roundabout, doesn't it? I have no idea what these things are, or how they are formed, but they are pretty big: the whole square must be something like 100 km wide.
If you go to the south and a bit to the west from this square thing, you'll find a nice string of meteorites shown below:
These strings are quite common in the solarsystem. They are thought to originate from a single meteorite being ripped apart by gravity (and maybe atmosphere) on its way to the planet surface.