AZ Roadie--Would you believe it took me years to work out this clue and find the box. We were the first ever to find it, and oh what a joy that was!!!!! I did a dance of joy. It was funny because we didn't come together or even know each other, but I was wandering around, completely puzzled, and he pulled over saying "by any chance, are you a letterboxer too?" We were both hunting this box (in the completely wrong area) but eventually found it together.