thanks!
Now, the fact that the trees in the foreground are gone have happened (I think) because I have accidentally moved the population slightly. But then in the end, I am ok with that, because I still believe that none of the models I've seen so far are good for close-ups - they all look quite CG (at least for normal people, non Terrgeneers, if you will).
Yeah, the rock still isn't spectacular, but then, I'm also not very good at these things.
Cheers,
Frank