Darrell Lewis is an historian and archaeologist who, for the past 40 years, has lived among and worked with Aboriginal and white Australians in the Northern Territory. Travelling by four wheel drive, helicopter, boat and on foot, his work has taken him to many remote regions to record historic sites and Aboriginal rock paintings. He has written books on rock art, settler history, cattle station technology and environmental history. Among his publications are The Rock Paintings of Arnhem Land, Australia (1988), Beyond the Big Run (1995), Slower than the Eye Can See (2002) and The Murranji Track (2007). He is currently employed at the National Museum of Australia where he is writing a history of the search for the lost explorer, Ludwig Leichhardt.