Once you've completed the 'Adventure Lab - A lap of Mount Panorama' you will receive the coordinates to allow you to find this cache. IT is not at the given waypoints.
You will be given the coordinates to this cache in the final journal entry. Go back through the Journal entries to retrieve them.
To complete the Adventure Lab, you need to download the app for your smartphone. More information can be found on the following website: https://www.geocaching.com/sites/adventure-lab/en/
You can find 'Adventure Lab - A lap of Mount Panorama' through this link as well: https://labs.geocaching.com/goto/f4653223-697d-451d-876b-ff5ffc8f7f55
Good luck on your adventure!