The dig is a technique that can save your volleyball game. If the ball is about to hit the floor it can be rescued with a dig and therefore, rescuing your team from the other side getting a point.
The idea of the dig is to bring the ball back up into the air so it can be volleyed or slammed into the other teams court. It is a brilliant way to set your fellow players up with an easy shot.
The technique is to lock your elbows with your hands together in front of you and hit the ball with the part of your hand between your palm or thumbs and your wrist, depending on whether you have your hands positioned wrists up or wrists together.