History
The concept of crop circles began with the original 1970s hoaxes by Bower and Chorley. They were inspired by the Tully "saucer nest" case in Australia, which can be taken as an early case of crop circles. There are pre-1970s reports of crop circles, but they were always simple circles, which could have been caused by whirlwinds.
Read more about this topic: Crop Circle
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