I foresaw your comment, Martin, and was already doing some tuning to the strata. And the ugly holes, btw. The only thing I can't get rid of is the patch of tarmac on top of some fallen stones. Smoothing usually helps, but not now. I tried rock objects, but that wasn't very nice.
Rather fast one, this one; 45 mins with detail 0.8 AA8 and soft shadows, though with 5 samples.
