Flower Crop Circle In Boorowa, Lachlan Valley, Yass - Australia

I've never heard about crop circles in my native Australia - but here is a first.
In Boorowa, Lachlan Valley near Yass, New South Wales about four hours southwest of Sydney the below circle in the shape of a large flower appeared .
Apparently the pattern is a week or two old, but does not show any signs of human tracks in or around it:





Source - CropCircleconnector