Buried bunker shots are one of the shots that really scare most amateur golfers. It's not that hard of a shot if you know how to play it. The sand wedge is used a little differently than it is for a normal bunker shot. Normally you have the face open, so that you use the flange of the club, but here we are going to use the leading edge, the digging part of the club.
Clubface: How to Hit a Buried Bunker Shot
So when you play a buried bunker shot, in order to get the ball out of the trap you are going to play with a square clubface. This will allow the leading edge of the club to dig down into the sand. So first, square your clubface. Then your ball position for a buried shot is more towards the middle of your stance.
Then pick the club up quickly with your wrists, and then set it down into the sand with a steep angle of approach. The clubface will dig underneath the ball and send it out on to the green. Ball in the middle of your stance, weigh to your front side just a little, cock the wrists up quickly and then set it down into the sand. The leading edge will dig the ball right out of there and this shot won't be as hard as you think.