Kelly Matthews pointed her camera through the foliage on a day out in Darwin and ended up with the incredible snap.
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Kelly told the BBC: "I put it on Facebook and straight away all my friends said 'that looks like a map of Australia'".
The emergency services phone operator had travelled to the Northern Territories for a wedding but found time for a little exploring.
Her photo drew high praise on social media, with some highlighting an obvious omission.
William Lehmann said: "Tasmania absent as usual."
Elle Chicoli replied: "Mate, just go there and cut a hole in the bush."