An interesting one MartinR, I must have looked around every known chalk pit, changing map dates before I found the outline on a later
map, then back tracked to the given clue. Good fun when done with added brain fog
Having (almost) survived Man Flu, and then Sainsbury's, I came back home to post the next GTP. It looks like the computer has, for the moment, eaten it. So here is a hastily cobbled replacement.
Should be very simple...