Ken Duncan's Panorama: Forbidden Australia -- As the lines of regulation are drawn and redrawn across the country, determining exactly what you can and cannot see of our most important national monuments, photographer Ken Duncan feels compelled to speak out.

The ever-shifting sands of Lake Mungo National Park are Australia’s window into deep time, where people sat, cooked and talked tens of thousands of years ago. Professor Dirk HR Spennemann has ventured this way before. But he never tires of taking the journey, and it always leaves its mark.