The Dig Tree"Wills knew that he was fading fastest. On 26 June, he decided the only honourable thing to do was to sacrifice himself to save his companions. 'Without some change,' he wrote, 'I see little chance for any of us'. In 1860, an eccentric Irish police officer named Robert O'Hara Burke led a cavalcade of camels, wagons and men out of Melbourne. Accompanied by William Wills, a shy English scientist, he was prepared to risk everything to become the first