I spent this past week getting extremely up close and personal with a SandPro. I think my left leg will smell like exhaust for some time.
Anyway, in evening out the sand and repairing some wash out in the bunkers at Huntingdon Valley I was able to gain a very different perspective on bunker construction.
HVCC's bunkers seem to have come in three major "eras." The first are the original William Flynn bunkers, the majority of which still exist. Several years later, a Donald Ross/JB McGovern master plan was implemented in partial form (mainly the new 14th green and 15th tee) with some bunkers being added or moved. The third were the additions by long time Head Golf Professional Joe Kirkwood in the 40's.
The Flynn bunkers, in my opinion, have A LOT of character. They are deep and cavernous - yet simple in shape, no capes and bays for the most part. A lot of the interest in the bunkering lies in the variance in their slopes
on the bunker floor. These bunker floors have movement in them like some greens - which is very hard to notice because of the nature of a sandy lie, but nonetheless they are present and affect the next shot immeasurably. This also seems similar to the MO of the Raynor/Banks style with simple geometric shapes containing a lot of movement and internal contour.
Another interesting feature of the Flynn bunkers are how they integrate with the surrounds. From above, it's almost as if Flynn "smeared" the bunker across the landscape, allowing for the fairway to run into the bunker and the "joint" of the bunker/fairway/green complex to mesh seemlessly. This is in stark contrast to the presentation I've found on a lot of Ross courses, where the bunkers - while situated in respect to the shot similarly - are a bit more "independent" of the other features. It's interesting, to me, to view the 14th and 15th greens at HVCC to see this contrast in presentation.
Flynn also seemed to design catch areas in the bunkers for sand wash out, allowing the superintendent to simply push the same back up to the top of the bunker without worrying about rectifying any bunker edges. Interestingly, this is well implemented because of above regarding the "smearing" of the bunker across the landscape. The greater scale of the bunkers all for the catch areas to exist.
Paging Wayne Morrison: Could this be the influence of Howard Toomey? These bunkers are EXTREMELY well engineered.