I read an article today about a beautiful crop circle in the shape of a giant hummingbird that appeared recently in the U.K. The article mentioned that there had been a, "spate of crop circles seen across Britain this summer." I soon found several articles about and photographs of this phenomenon turning up in the the UK countryside since May.
Click on the following to see some examples:
More than one of the articles contained lines like the following:
Crop circle theorists known as 'croppies' - believe the patterns are created by UFOs during nocturnal visits, or caused by natural phenomena such as unusual forms of lightning striking the earth.
Of course, there are also many people who believe these are merely hoaxes created by mischievous human beings.
What do you think? Are they merely man-made or are they true mysteries?