GeoGraph - photograph every grid square

St Albans: Griffiths Way gasometers

From old Ordnance Survey maps it is evident that the site of the St Albans gas works was once much larger, stretching down to Stephen's Hill, and having its own dedicated railway siding, more or less on the site where Sainsbury's is now. These two holders are all that remains but they are large enough to warrant being individually represented on the current Ordnance Survey 1:50,000 scale mapping.