Are all crop circles man-made ?

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A crop circle expert from Australia believes that he has evidence to suggest that they aren't. While there is no doubt that a lot of crop circles are hoaxes, the jury is still out on whether every single crop circle can be attributed to people with planks of wood and a lot of spare time. Researcher Greg Jefferys claims to have uncovered evidence that crop circles have been appearing in fields as far back as 1880, a fact that he believes proves that the phenomenon pre-dates circle hoaxers.
"This discovery proves that claims by various artists to be the sole creators of crop circles are themselves a hoax," he said. "I hope this discovery will stimulate renewed interest in crop circles by serious scientific researchers who have been fooled by the hoax claims." An Aussie historian believes he has buried forever the ‘cereal’ lie that crop circles are the work of hoaxers – by unearthing Black Country images of them dating back to 1945 and beyond.

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