Geograph - photograph every grid square

Having completed all my adjacent myriads the far easier job of completing my first hectad could be carried out, needing 10 squares of the 100 around the edge of Hertfordshire and two in Trent Park. I expected it to require two trips as however careful you are it's easy to miss the odd border, and as Trent Park had few clear landmarks used the pond as my second square out from the car park and assumed the other one I needed was en route. I covered the roads easily through the back of...