Back pin? They are both quite short, leaving the back part of that green to the 5th hole.
There's a left pin behind a depression of fescue. I like to aim straight at it and play it a few yards short.
The second pin is further right, behind the bunker. Yes, a few yards longer. Being short is a problem due to the bunker and the mound before the pin. It may be good to play a little long and right, as there is another hump to stop the ball.