Hidden bunker under the tree right of 17 green at Pac Dunes.
I got a very straight bounce last time there with a right side pin and wound up in that little f*&cker. Very happy to make 4.
My favorite bunkers by course:
Big Mouth to the right of Bandon Dunes #15
Big bunker to the right of Bandon Trails #13
Little trench bunker to the left of #11 Pacific Dunes, looks natural as can be
Hell Bunker at #6 Old Macdonald, or maybe the save your ass bunker behind #7 (from which I got up and down)