Australia is home to a variety of dunefields, but if we had to pick one, it would be Munga-Thirri (Simpson Desert). Spilling into three Australian States – Northern Territory, South Australia and Queensland – this rolling sand landscape is officially the world’s largest dune desert at 180,000 sq km. Although extremely remote and only discovered by Europeans in the mid-1800s, it’s Aboriginal history spans back much further, and there's also wildlife that can survive its vicious heat, including 150 species of bird and reptiles such as sand goannas and central bearded dragons. From the Northern Territory, organised tours leave from Alice Springs to visit the fringes of the desert, or you can pick up a Desert Park Pass for permission to make your own way into the Outback.