Nevil Shute 
In the Wet [EPUB ebook] 

It is the rainy season. Drunk and delirious, an old man lies dying in the Queensland bush. In his opium-hazed last hours, a priest finds his deserted shack and listens to his last words. Half-awake and half-dreaming the old man tells the story of an adventure set decades in the future, in a very different world…