***Rumour is there are 3 queens hidden in Queensferry - can you find them all?***
They say less is more, to find the cache, use checkers times 4....
You can validate your puzzle solution with certitude.
Oh, and don't waste your time at the posted coordinates - there is nothing there. :p
Cache details are in certitude, but bring a pen/pencil in case.
Enjoy the walk! :)