Hence greens were formed on flattish places where a hole was cut. The habit of forming a pile of sand on which to place the ball to begin play of the next hole helped to level the ground and form teeing areas, and the double greens came about as players used the same holes both out and back. Hollows used by sheep to shelter from the wind formed natural bunkers. Many people have tried to copy the course but have never been able to replicate the subtleties formed by centuries of wind and rain. The first thing that strikes you when you play the course is that almost all the trouble is invisible.
Deep bunkers lurk, waiting to trap the ball, an instant stroke penalty.
The only thing to do is get the ball back in play, often backwards is the only escape. Depending on the wind, the correct line on the tee can change enormously, as hazards that you flew comfortably one day are unreachable the next. I remember in my first Open there, I played a practice round with Ken Brown, now commentating for television. Finally he turned to me and said, You pick a line here. I looked ahead, and my eyes scanned an arc of about 45 degrees.