Papua New Guinea can be challenging. With almost no tourism infrastructure and limited information available in books and on websites, it can feel like you’re stepping into the great unknown. But this is exactly why travellers find this country so compelling. Nothing is contrived for tourists and every experience is authentic - even the main island of Bougainville is a largely DIY travel experience. The striking natural beauty and myriad complex cultures offer some riveting and truly life-affirming experiences. The island of New Guinea, of which Papua New Guinea is the eastern part, is only one-ninth as big as Australia, yet it has just as many mammal species, and more kinds of birds and frogs. PNG is Australia’s biological mirror-world. Both places share a common history going back tens of millions of years, but Australia is flat and has dried out, while Papua New Guinea  is wet and has become mountainous. As a result, Australian kangaroos bound across the plains, while in PNG they climb in the rainforest canopy.