Mike Cirba,
BA BA Black sheep answered the Garden City Golf Club question for you, but let me add my version as well.
No, I do not consider GCGC bunkers natural, or natural looking.
A. If they are natural, then every other bunker on Long Island
is unnatural.
B. Deep Pits, that can only be entered by ladder don't fit my
definition as natural bunkers on the Hempstead Plain.
C. Many are clearly artificial, created by man.
Now, I will tell you that with the exception of a few holes,
I love them. I like their penal nature, I like the strategy they MANDATE. I like how flag poles denote disaster, and how those flag poles seem to have a magnetic quality, drawing golfballs to the advertised location to avoid. I like the invisibleness some of them possess. I love the challenge they present to the golfer who finds them.
But, they don't strike me as naturally evolving bunkers, rather deep pits created by the architects.