It's amazing how flat Oakmont appears in Charlie's posted photo. Anyone who has been there knows how not flat it is, and the hills are incredibly well utilized in the design. As I've said many times on here, the topography of Oakmont is like most of western PA, and all of the many golf courses in the region, yet there is only one Oakmont. Virtually every other course uses hills in the more traditional ways, and they are lesser for it.
As for Jack's comment, that is just silly, pointing out the turnpike. You don't even really notice it, other than when you're crossing the bridge. And with the trees, the course is MUCH more disjointed.
Know trees, no peace. No trees, know peace.