The story of Australia is the story of endless change: life, climate, and location. Seas come and go. Mountains rise and fall. Whole kingdoms of life triumph and disappear. The series final sees us racing down the last 65 million years to the present day. A mere blip in the long geological story of Australia but importantly for us, it is in this episode that we reveal the events that have shaped the more obvious features of the continent we now inhabit. In the wake of the catastrophe that saw off the dinosaurs, Australia set off on a lonely voyage in southern seas.