At the coordinates given on this page you will find an NFC tag (Near Field Communication tag) which you will need to read to get the final cache coordinates.
NFC tags are small discs containing some information programmed into them.
To read the tag you will need a device such as a smartphone or tablet capable of reading NFC tags and have this feature enabled on your device.
Just place the tag against the back of your device (direct contact is required) and a message will pop up on your screen showing the final coordinates and a hint.
Please note: You may need to remove your device from any wallet to allow the tag to be read.
Example of other NFC caches.