Count my vote for the deepest as also being #11 at Tobacco Road. I've only played it once, but of course went for it in two and promptly popped it up and directly into the bottom of that monster. I'll also remember it as being one of the best bunker shots I've ever hit, but it took everything to get it up enough to get out of there. The face of that thing is quite steep, and as others have mentioned, the pictures don't do it any justice.
There are some other huge bunkers on that course, most notably along the left side of the par five 4th, surrounding the landing area short of the green on the par four 5th, and the one short-right of the green on the long, uphill par four 9th.
Beautiful work by Strantz, one of my favorite courses.