interesting to see how often it had to be reinstated due to dust storms etc
This reminds me of a story I was told many years ago by an RAF Flt Sgt aircrew signaler who had spent quite a long time in the Middle East. He became intrigued as to how the drivers of the buses which traveled from Damascus to Baghdad found their way. He said that they always traveled at night and each bus driver would go a different way across the desert.. Eventually he asked a driver if he could travel in the cab with him so that he could see for himself how they navigated. There was nothing to indicate any navigating process so he asked the driver how he did it. "I just know the way" he said.
This story fascinated me and I now see that modern science has gone on to confirm long held beliefs that humans do have a natural sense of direction. Unfortunately it was of no help to me during 600 hours of flying and many years of small boat sailing.