This is a bonus physical geocache for those who complete any single stage of the Adventure Lab "The F4 Sydney Ferry". The cache is not at the published coordinates. You will be looking for the correct coordinates while completing the Adventure Lab.
To complete an Adventure Lab you need to download the app to your smartphone. Login using your regular geocaching name and password, then search for Adventure Labs in your area. Click here for more information on the Adventure Lab app.
I hope you enjoyed the Adventure Lab and exploring the F4 ferry route.