Stroke Index 1 and you can see why. 

The tee shot is the difference between making 4 and not.  The golfer hits a driver across the valley trying to make to the flat landing area while avoiding the out of bounds on the right. 

The golfer is faced with a mid/long iron to a sloping green which is protected by a bunker front left. 

If the golfer has not reached the top of the hill, they should be laying up; taking care to avoid the row of trees 80yds from the green.

A 5 is a good score when leaving this green.