GeoGraph - photograph every grid square

One of the quirks of the UK road system: an unclassified dual carriageway outside urban areas is unusual in itself, but what makes this half mile long dual carriageway extra special is that it is built with a single lane for each carriageway. Officially, it has a 70 mph speed limit, but its narrowness, bends and profile would make achieving this a challenge. This is the western end - for the eastern end, see TQ7460 : Pilgrims Way near Burham.