WCOC Sprint. Basically treated this as the model event - since clearly it was not a "sprint" - and was more apprehensive about finding out what the terrain would really be like than interested in racing. Happily, it turned out to be more humane and runnable than the model.
Main takeaways: The green can be useful as a handrail or a waypoint in the case where a hard green/yellow edge exists - but stay out of it if possible. When unavoidable, get out as quick as you can, because you will not be able to see or read anything and if you want to have any hope of punching out near the place you're aiming for your only option is to have faith in your own ability to stay accurate on your direction while battling through all manner of crap.
The contours are tough to read at speed, except for the largest depressions and hills. The absolute toughest are the areas consisting of a vaguely green/yellow mix plus a mishmash of one-countour topography, such as on the first half of the 4-5 leg on Course 5 here
. Even at a slow walk it's hellishly difficult to keep map contact in these areas, and really your best bet is (again) to push through it and plan/hope you come out at some identifiable feature.
Everything really does look the same. Most every depression and hilltop is the same shape and size of flattish kidney-looking thing, and there are quite literally zero stark features, whether linear, round, or point. No trails, no cliffs, no ponds, no creeks, no boulders, nothing man-made. And few reentrants or spurs in the usual sense, i.e. larger than one or two 2.5m contours with maybe a form line thrown in just for fun. Relocating is extraordinarily difficult; a 1-2min mistake anywhere else is a 5min mistake here.