A Charles Darwin University academic has shed light on the death of explorer Ludwig Leichhardt, whose disappearance in the Outback has remained a mystery for more than 150 years. CDU humanitarian lecturer Dan Baschiera argues that the enigmatic explorer may have been assassinated to prevent him from speaking about colonial atrocities. On Leichhardt's Path Kakadu 1845: Reflections Bushwalking a Time Tunnel is a social history of mystery, a story full of reflective questions and speculation about Leichhardt, his approach, the controversy, and his disappearance.