John Cullum:
You obviously have never read either of Dr. MacKenzie's two articles on camouflage. They are fascinating. The second is actually a total paraphrasing of a "British camouflage expert" which was reprinted in the U.S. Army Corps of Engineers journal, and is probably still the best article they've ever published on the subject.
It may well be something of a crock to say that the Doc's knowledge of camouflage was essential to his practice of golf course architecture, but he WAS an expert on the subject, no doubt about that.
As for the bunkers around the 15th green at The Valley Club -- Robert Hunter, who was around for the construction (MacKenzie was not), apparently was very enamored with bunkers which overlapped each other and blended together from a distance. The 15th is an uphill par five, and when you are 200-250 yards out, that bunker up the hill behind the green appears right on top of the green, while the others on the right overlap so much it's impossible to tell what is in front of the green and what is behind. The illusion goes away when you get up to 100 yards out, as shown in this picture. The bunkers aren't especially strategic, although only one or two of them are really out of play to anything but a skulled wedge.