The central lowlands is the region with the lowest average elevation. It covers one third of the continent.
The Simpson Desert is Australia's fourth major desert. It lies along the boundary of the Western Plateau in the Central Lowlands.
The Murray-Darling river basin helps the livestock, for rain hardly comes down in that area.
The Murray is Australia's longest permanent river and it's chief tributary is the Darling river.
The continent's largest lake, Lake Eyre is usually drie because of little rain.