Simulation of a hole in the game

Hello,tell me how you can make a simulation of the hole or make the hole itself, so that it was like in the game?(I considered the option of masks,but then it turns out that I need to make the upper part of the hole through many separate sprites?(the"far" wall of the hole is blocked by the ball,but the outer wall is no longer there(which is closer to the player visually).An example from the game (attached photo):
The game itself: http://www.game-game.com.ua/184002/ . Sorry for my English,thank you in advance

 

you create a mask on this red area, make the ball visible only outside the mask. When the ball falls through the hole it will disappear as it passes through the mask.

 

Thank you for your response.