[Surferdude]

Look like ancient hieroglyphics on these rocks at Moffat Headland.
You get a better effect if you expand the photo.

[mickd]

 

[Dazzler]

I think it might be the instructions on how to change the language to Russian on a GD-02 head unit...

[Surferdude]

I thought maybe a prehistoric "Foo was here!"  message.

[nzenigma]

woooooooooo HeaVEeeee, as we said at Nimbin. 

[asathorny]

It looks like :-
Ogham is a
Language writing system

DescriptionOgham is an Early Medieval alphabet used to write the early Irish language, and later the Old Irish language. There are roughly 400 surviving orthodox inscriptions on stone monuments throughout Ireland and western Britain; the bulk of which are in southern Munster

and there are three or four people alive who can read it.

how it got to the other side of the planet defeats me 

[nzenigma]

It looks like :-
Ogham is a
Language writing system

DescriptionOgham is an Early Medieval alphabet used to write the early Irish language, and later the Old Irish language. There are roughly 400 surviving orthodox inscriptions on stone monuments throughout Ireland and western Britain; the bulk of which are in southern Munster

and there are three or four people alive who can read it.

how it got to the other side of the planet defeats me 

Recent analysis of zircon found in rocks in the Grand Canyon show that they are the same rocks found in an area of Tasmania.
How did they get there?