Originally Posted by
roundwego
Any thoughts on why the defined track goes over the top of Black Rock? Would it not have been more sensible for the inbound track to have been more from the south west passing half way between Black Rock and Saddle Head.
I think as was said earlier, before the days of GPS it was common to base routes on things rather than imaginary points in space. It would be interesting to know when that procedure was created, and when it was last significantly revised.