The Cache is not at the posted coordinates, they are the parking lot for visiting the Cornelius Low House.
You must complete the "Cornelius Low House" Adventure Lab to obtain the coordinates to this cache. It is a bonus for completing the Adventure Lab. After you complete your stroll around the house you will find the final coordinates for completing the Adventure.
Use the Groundspeak Adventure Lab app and locate the link for "Cornelius Low House", or go the following URL: https://adventurelab.page.link/vC5H or scan the QR code down below.
