As a hunter and prospector have seen stone chips all over.
I liked South Australia, but rarely saw the vitreous, basaltic and granite useful for making sharp edges. The centre has been a sea - there are exceptions and some rock pieces have been carted in.
Funny, for a people living in such a dry place they never made anything convenient to carry water or cook in, or soft and sheltered to sleep.
The caves in WA were just that a bit of shade. They didn't make them.
But post RIO, they are sacred.
Geez, hotels all over the globe are sacred cos Furps slept here