The Crop Circle Hoax — two pub regulars built the mystery with a plank and a rope

In the cornfields of southern England, beginning in 1978, two middle-aged friends from Southampton — the painter Doug Bower and his fishing companion Dave Chorley — flattened circles into standing crops at night using a plank of wood and a length of rope, and let the world decide what had made them. The world decided wonders: extraterrestrial landings, plasma vortices, earth energies, messages for humanity. A whole pseudoscience, “cereology,” grew up to study the formations, with its own experts, books and instruments. None of it was needed. In September 1991, Bower and Chorley publicly confessed in the British tabloid Today that they had started the entire phenomenon themselves as a prank, and they proved it by making a circle in front of a camera.

The mechanics were absurdly simple and the confession demonstrated them. Each man held one end of a rope attached to a wooden board; standing on the plank and pivoting around a fixed center point, they pressed the crop flat in a smooth circle, using a sighting device — a wire loop on a cap, in some accounts — to walk straight lines between formations. With these tools they claimed responsibility for more than 200 circles between 1978 and 1991, and for essentially all of the early “genuine” ones that had launched the mystery. The pair said they had been inspired by accounts of a 1966 “saucer nest” — a swirl of flattened reeds found at Tully in Queensland, Australia, and attributed to a UFO.

The exposure was as clean as any in the literature of hoaxes, because the hoaxers staged it themselves. To settle the matter, Today arranged for Bower and Chorley to create a fresh circle in secret, then invited a leading cereologist — Pat Delgado, co-author of best-selling crop-circle books — to examine it. Delgado pronounced the formation genuine and beyond human capacity to fake, at which point the newspaper revealed that two pensioners had made it the night before. The episode demonstrated not merely that the circles could be faked but that the field’s foremost authenticator could not tell a fake from the real thing he believed in.

The lasting interest is in why the mystery flourished for thirteen years against so trivial a cause. Bower and Chorley supplied only flattened crops; the public, the press, and a credulous expert subculture supplied the aliens, the vortices and the meaning. The case is a near-laboratory demonstration of how an ambiguous physical trace, released into a culture primed for wonder, generates its own elaborate and self-confirming explanations.