With the current popularity of the term "minimalist", I think a lot of people fail to realize the extent of (crafty and artistic) construction work that takes place, here and there, to make a so-called "minimalist" course work, over 18-holes.
As has been stated here before, many people would be surpirsed to learn about some of the earthwork and reshaping required to create Sand Hills and Bandon Trails for example. A recent thread discussed the large fill made to create the 13th green at Trails. This is a credit to the talents of Coore and Crenshaw, and their crew, who are able to create artificial features that sincerely appear natural.
Without specific details, I presume Tom Doak and co. did the same, here and there, at places like Pacific Dunes, Barnbougle, and Ballyneal (?), knowing what we've done as well, at places like Blackhawk and Wolf Creek and Sagebrush.