One of the most interesting features, that I rarely encounter, is the barrel mound that traverses the rear section of a green, which isolates the rear section, making approaches and recoveries challenging.
This semi-barrel mound is usually found in the back 1/3 or 1/4 of the green
Shots hit short, which is the tendency with most golfer, are faced with a difficult approach putt when the hole is cut in the rear.
Conversely, balls hit long when the pin is on the near side of the ridge are faced with difficult approach putts or recoveries.
CBM, SR and CB had a feature, their donut or horseshoe mound, which isolated a rear portion of the green, but, the feature I'm referencing is fairly straight and goes across the entire green.
It's height could be moderate to severe, but, it's impact on play is DYNAMIC.
With such a simple feature producing such a variety in play, why haven't we seen more of it ?
What courses that you've played have this feature ?
Its simplicity and effectiveness seem contrary to its rarity.
Why is that ?