There has been little activity on the guessing front for the WoGE 206 posting. I don't want WoGE to stagnate and for people to lose interest so I am taking the liberty to post an update to the post hosted for Simon (I hope you don't mind Simon). Simon's original posting is in the centre of this image.
Many thanks to Jerome for hosting. Not the most fine-grained of images, but clues can be found from man-made features and colour. Schott rule applies, details of location and Geology please.