This is an idea that's been around in various forms, and is now here in Wickham Park with a slightly new twist.
The posted coords will bring you to a device that will present you with several possible combinations of LAT/LON, but you'll have to strike the right match to light your way to the final.
Use the supplied tool to operate the device, or you could use a metal cased pen or similar item if the included tool should end up missing or damaged.
When you're done, please replace & re-hide everything securely.
Also, please don't post spoiler logs or pics; let others have the same fun you did!
Enjoy!