Cary:
Unfortunately I have never seen the topo map of Pine Valley "before". You are right that a lot of earth was moved to build it, for that day and age, but I suspect that the total was still only somewhere between 100,000 and 200,000 cubic yards.
It's shocking to me that some architects move 300,000 yards and more on nearly every course they build. That's a lot of earthmoving. Yes, The Rawls Course was more than that, but:
a) none of it surface drained anywhere at all, and it all had to, because the perk rate of those soils was pretty near zero; and
b) more than half of the 800,000 cubic yards are in the berm around three sides of the course to hide the roads and buildings across the street. The golf features of the course really only took about 350,000 cubic yards of earthmoving, and that was to regrade every inch of 18 holes.