Hi Rdunk,
I indeed used the image located here (for all of my images of the object):
http://viewer.mars.asu.edu/planetvie..._35N345W#start
ScreenHunter_03Jan170653-1.jpg
As I posted earlier, if you look at that image, you can see the shadows and direction of the sun (in the larger image from the link above).
ScreenHunter_02aJan120635.jpg
While the terrain in the area of the perceived “dome” like object is very rugged (this is an area of ejecta from the very large crater below this object), a rise or dome will cast a shadow. The reason this object does not cast a shadow is due to it being a depression (therefore is reflects light on the opposite side of the sun), as in the example below.
AdomeandCrater.jpg
Have a great one!
M