With no other evidence than the age of the golf courses and number of them that contain them, the wall aspect seems to have established itself in East Lothian. Anyone else know of any areas that are older with as frequent and obvious wall features as EL?
North Berwick is probably the oldest in the area, followed by Kilspindie (and recently Cragielaw next door), Dunbar, Muirfield, Royal Musselburgh (possibly older than all of them), Winterfield and most recently Renaissance. (some original, some put in)
All these courses are within a 15 mile radius of North Berwick, all varying in age but all have walls that actually come into play rather than just act as boundary walls which they would have been originally.