At the above coordinates you will find yourself near the main gate to these gardens as well as the easiest/closest parking.
Enter the gates proceed to The Fern Gully Walk where you will find an information sign at:-
S 38° 09.214' E 145° 07.805'
From the information sign find out what percentage of Temperate Rain forest Victoria has-
This number minus 5 will give you C
Now head to the garden of the children of Frankston -
S38° 09.185 E145° 07.787
Here add the last two numbers of the year together and this will be AB
Now on to Bunjil at
S38° 09.150 E145° 07.739
Here look for the date of the harmony Day Celebrations.
The last number of the year will be D
Use the day number and ADD 11 to make EF
GZ is at S38.09.ABC E145 07.DEF
GZ is not far off the path;
The cache is now a 3d printed container hidden in a typical manner.
We hope you enjoy your search and please watch out for muggles!!!