What do you think about this?
Flying over South Australia in 1998 , a pilot discovered something astonishing: the giant image of a human being, 4.2 kilometers long, carved into the earth.
It must have taken a long time to carve the figure into the arid soil with a tractor or a plough. Even planning the work probably required aerial photography or satellite imagery and GPS technology.
But no one knows who , when , how or why created the figure.
