In 1977, in her twenties, Robyn Davidson decided to undertake a journey half way across Australia with just a dog and four camels. It wasn't her intention to tell anyone about it, let alone the whole world but following a National Geographic article, a series of stunning photographs, she became a world wide sensation.
Following the trek, she wrote a book in 1980 about her experience called Tracks. That book has never been out of print and the story has been turned into a feature film. Robyn is in New Zealand as the keynote speaker of the Word Festival in Christchurch.
Robyn talks to Kathryn Ryan about her journey 40 years on, and how it changed her life.