This is the bonus cache for the 10-stage "Highland Park Then and Now" Adventure Lab series. Five of the stages in the Adventure Lab, which are located around Highland Park, will give you the coordinates to this bonus cache.
You can access the Adventure Lab by scanning the QR code below or following this link. Use a simple number subsitution found after the Adventure Lab stages for the following letters to locate the final cache.
N 41° 56.GHI W 071° 17.JKL
The final cacge is a custom-created container so please be careful with it. A Certitude link is included below for those who want to verify your coordinates. Hope you enjoy!
You can validate your puzzle solution with
certitude.