Arkaroola - located around 600km northeast of Adelaide - only exists as a consequence of its commercial uselessness: previous attempts to mine, run sheep and otherwise develop it have failed. As a spectacular and remote wildlife sanctuary, though, it excels...
Everything they say about Coober Pedy - the wild locals, the windsept town, underground houses and the feeling Mad Max could come blasting through the main street in the last of the V8 Interceptors is true - but the surrounding landscape is also astonishingly beautiful... and massively unforgiving. I lost two tyres in one day driving the Oodnadatta Track!
Deep Creek is close to Cape Jarvis, setting off point for Kangaroo Island. I spent a weekend there a few years back - it's a beautiful spot to go camping and get away from it all.
A two week camping trip to Eyre Peninsula back in 2003.
The Flinders Ranges, starting about 3 hours north of Adelaide, is one of my favorite places on earth. Accessible yet not too accessible, it's a wonderful spot to go camping for a few days, or a few weeks, and really leave the world behind for a while.
Another trip to the Flinders Ranges
My first trip to Kangaroo Island - although it's only a short trip from the mainland, it's a different world full of animals far less habituated to humans than on the mainland, awesome coastal landscapes, and one of the only places on the planet where you can get up close and personal with Australian fur seals.
Another, much more recent, trip to Kangaroo Island
Melrose is the nominal start of the Flinders Ranges - a great small country town in its own right, but also gateway to the Flinders Ranges and - in Quorn, "just up the road" - the famous Pichi-Richi Railway.
Robe is a coastal holiday town roughly 4 hours southeast of Adelaide. There's the opportunity to go 4WD-ing, swim, surf, or just kick back with a drink and do nothing for a few days.
Yorke Peninsula is the boot-shaped peninsula immediately West of Adelaide. It's a bit of a ship-wreck coast, too, with unpredictable waters, reefs and sheer cliffs resulting in the grounding of many ships from the past up to the modern day.