Originally Posted by Pistolenschutze
That looks like red clay soil, Swanie. Is that correct, and if so, is that common over most of Australia?
I wouldn't go so far as to say that Australia is made out of it, but yes, it's common. Outback roads are often nothing more that a compacted grade of the natural clay. In the dry you can choke in the dust of a car that's half a mile in front of you, and an hour of rain will do this.