This series explores eight significant geographic features of the Australian landscape. The primary focus of each episode is the physical geography of the features, including their geological history. The programs also look at the interaction of people within these environments and issues relating to the care of these geographical and biologically significant places. 8. The Murray River This program looks at how the river formed and at how it has changed both naturally and as a result of human use. We look at the different roles the river has played in both Aboriginal and European settlement and explore the impact of our heavy reliance on the Murray as a water source.