It was the greatest expedition of its time. In 1860 Robert O'Hara Burke, accompanied by William Wills and a party of explorers, set out to cross Australia from south to north. A few months later a tree bore a strange carving: Dig Under 3ft NW. Burke, Wills and five other men were dead. How did a man notorious for getting lost on the way home from the pub come to lead an expedition into the desert's dead heart? What went wrong? Dig 3ft NW is an abridged version of The Dig Tree, Sarah Murgatroyd's utterly compelling account of Burke and Wills' journey into the great unknown.