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16 December 2009
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Aerial graphic. © BBC Red-necked wallaby Common wombat Aerial video tour Back to main map
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Aerial photo of the snow-covered Australian alps. © BBC
Moisture-laden air rolls over the top of the snow-covered alps. © BBC
The Alps
Australia is the flattest continent on earth, because there has been so little geological mountain-building activity here for millions of years and so much weathering. But there are mountains here and in some areas they are covered in snow for large parts of the year.

This is the Great Dividing Range, Australia's only substantial highlands. It runs for 3,500km from Cape York in northern Queensland, where tropical rainforests grow, all the way down the east coast to Victoria and re-emerging in Tasmania.

These highlands are a varied mix of rounded hills and deep gorges - only in the south do they reach great heights. Because they're so close to the coast, the air that rises over them from the east carries moisture from the sea. This tends to fall as rain, or as snow on higher ground with drifts up to 30m in places.

The highest point is Mt Kosciusko in New South Wales, at 2,228m. Here, winter temperatures have been recorded to minus 22°C.




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Close-up of a red-necked wallaby. © BBC
Red-necked wallaby
There are some unexpected animals in the Australian highlands. Red-necked wallabies have quite a broad range along the forests of eastern Australia and are common in Tasmania, where they may be found in the coldest areas, even foraging in the snows of winter. Amazingly, females will have young in their pouches at this time of year, ready to become independent when the spring returns and there's plenty of food around.
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Close-up of a wombat in the snow. © BBC
Common wombat
Common wombats are found in many forested areas of south-eastern Australia, but they have particularly soft, thick fur, which helps insulate them. As a result they can withstand the coldest weather. In the wintry high country, they will dig for grass through as much as 30cm of snow, and although in summer they tend to be more active at night, they often come out in daylight to forage during the winter. Wombats may travel 3kms a day to find food.
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