For full information, please see Puzzle Cache "The Chalfont Challenge!" (GC6BP81).
Follow Burtons Lane away from Little Chalfont, down the hill and then back up until you get about halfway up.
As good practice, please bring a Pen/ Pencil, a pair of Tweezers, Carrier/ Rubbish Bags (CITO), a pair of Rubber/ Latex Free Gloves maybe, and your stealthy mode!
Watch out for muggles as they can be abundant around here I hope you enjoy these and I hope they don’t stress you too much.
Good Luck