What is the setting of Mutant Message Down Under by Marlo Morgan?

The narrative is set almost entirely in Australia - specifically, the vast desert-like wilderness known as the Outback (see "Objects/Places - The Outback"). The harsh conditions of climate and terrain here are vividly portrayed, and when juxtaposed with brief glimpses of both Australian and American "civilization," these descriptions become even more dramatically evocative. Within the larger setting, there are several locations noteworthy for the key events that take place there.