'There is a point in the northern part of the state, or rather, a line that runs waveringly across it, where the vegetation changes within minutes. A cataclysmic second a million or more years back has pushed two disparate land masses violently together, the one open savannah country with rocky outcrops and forests of blue-grey feathery gums, the other sub-tropical scrub. You arrive at the crest of a ridge and a whole new landscape swings into view. Hoop pines and bunya command the skyline. There are palm-trees, banana plantations. Leisurely broad rivers that seem always in flood go rolling seaward between stands of plumed and scented cane. It is as if you had dozed off at the wheel a moment and woken a whole day further on.' (Introduction)