The amphitheatre is a unique and magical place - and I hope you enjoy it like I do.
The coordinates for the Amphitheatre are S 35° 3?.??? E 148° 5?.???
You can find the missing eight digits only in the central 19 hexagons (see attached image). Remember you only need the first eight in the sequence. I need to also tell you that if eleven is west then north is less.
If you add 0.001 to the GZ South coordinates, and 0.015 to the East coordinates, you will be standing in front of the entrance to the amphitheatre (see entrance spoiler photo - attached below).
You can check your answers for this puzzle on GeoChecker.com.
*** First to Find Honours Awarded to Winglen and McPhan ***