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Lake Tyrrell, victoria (Image: Visit Melbourne)

Lake Tyrrell covers over 200 square kilometres in the sprawling Mallee region in north-western Victoria, about 400km north of Melbourne. It is rarely deeper than five centimeters at any point.

On bright nights in August and September, or on vivid pink dawns year round, the lake acts as mirror, reflecting a perfect double of the sky.

It sits to the north of the tiny town of Sea Lake. By 2014 Sea Lake -- after years of decline, lowering population and closing businesses -- was in danger of curling at the edges and being taken by the next breeze.