Cache is NOT at the posted coordinates.
You must complete the Lincoln Highway - McConnelsburg Adventure Lab to find the coordinates.
Mobile app smart link
Use your phone's native QR code scanner to open this adventure in the Adventure Lab mobile app, or share the following URL:
https://labs.geocaching.com/goto/LHMcConnelsburg
After completing each of the 10 stages for this Lab Cache, check the Journal Entry for hints.
The container for this cache is a magnetic nano located at N 39° CB.EAD W 77° GF.JIH