This puzzle is a member of the Map of Victoria GeoArt. It has been placed to coincide with the Parkville Mega.
Konichiwa to all would-be geocaching poets.
All the hints you need are included on this page, as well as the answer.
GPS in hand,
(S)He searches hither and yon.
Geocache is found?
Sayonara!
84050472976731019252358255510842640351463791428925763410833959046235984941723762051539371
With acknowledgements to our US caching friend FrodoB.