I spent three futile hours trying to track down a slip road before I realised that the best way around this kind of obstacle was to catch a bus to the next small town and try again from there.

This I did and, by the time I was on the outskirts of the next village, the heat of the day had already passed before I found a reasonable place to stand near a small petrol station. I spent half my energies trying to flag down likely looking vehicles and the remainder dodging the cars that swerved in to fill up.