I'm with Pat! Charles "Steamshovel" Banks who was a disciple of CB Macdonald and colleague of Seth Raynor would use unusually deep bunkers as a signature feature. You would land greenside and not be able to see the flag stick from any point within the bunker. Blind sand shots of 15' to 20' to the green surface were common. Having grown up at the Knoll and playing my scholastic golf at Montclair, I can attest to the full swings required to get the ball extricated and on or close the putting surface. I say close because as Banks would create these elevated greens, he would also leave ample space from the perimeter of the green to the bunkers edge to allow for the fairness doctrine. Many a fine player would trek out of a bunker to find the ball on the collar short of the putting surface. At the Knoll, bunkers on 3, 4, 9, 12, 13, and 18 were blind (no pin visible). 2 and 6 are very deep but you can target the top of a flag. Likewise the 4th nine at Montclair, 1, 3, & 4 are blind and 6 & 7 are partially obstructed. Forsgate and Hackensack (Mr. Brightly please weigh in) have similar arrays of blind and obstructed bunker shots. I would also add Knollwood to the discussion as another example of his signature style. I don't think any designer integrated this feature into his work like Banks.