That wall is about the most exposed spot on the farm, they were at it most of the winter and if there was a wet windy miserable sort of day that was the day they'd be there none stop from dawn to dark!Not a clue, In the Forest of Bowland (Joke no trees for miles) miles from anywhere with only the farm which the wall belonged to in sight albeit miles away. Pleased it was a nice day as it was very exposed.