The Gawler Ranges is one of South Australia's best-kept secrets, one that even most Aussies don't know about. Rough, rugged, and remote, the weathered ranges were formed more than 1.5 billion years ago by a massive volcanic eruption, leaving behind a dramatic landscape of rock formations. It's almost all protected by national park, and local bushman Geoff Scholz will take you to all the best spots that you just can't get to any other way. Expect long days bouncing around the back of a four-wheel drive, but also expect to see more kangaroos and emus than you can count and some jaw-dropping scenery. Tours include transport to and from Port Lincoln (or from Wudinna if you are self-driving), all meals (wine and beer included), and accommodation in luxury safari tents, complete with en-suite bathrooms. The best time to go is during the cooler months, when animals are more active during the day. Summer tours include swimming with sea lions at Baird Bay.