Ah, Winton Queensland...
It's on the edge of 'the outback' in case you're unfamiliar.
I was there a few years ago and dead set there was a sign noting 'the outback' with an arrow pointing west of the Town.
I don't have a photo but I wish I did.
Maybe that's why he built the wall. To keep the Bunyips and the hoop snakes out?
Bunyips avoid metal and it's too tall for the hoop snakes to roll over.