Guest presenter Joe O'Brien taps into his inner Bear Grylls in this Back Roads adventure to Cradle Mountain in the wilds of the Tasmanian Highlands.

Heather Ewart finds there are many surprises in the tiny town of Boulia on the edge of the Simpson Desert about 1700km from Brisbane.

In South Australia, guest presenter Paul West goes on a wild ride along the Eyre Peninsula's rugged west coast, finding a place with an untamed spirit and a fierce self-reliance.