Please, let's not go down the route of reading too much into what he says - it's a reasonable suggestion that can be made by anyone, and has been. I actually think he knows as much as us on this one. Even if he did know - I guarantee he wouldn't give a genuine clue - that's not his role.Some of you are concentrating on Kerrash telling us to use the lat/lon system to divide and conquer.
Did everybody overlook the second sentence from him: "Or perhaps trying to spot interesting surface areas from orbit?"
Circling in orbital cruise over the right planet might show something (obviously not POIs that high)