CROP CIRCLES

THE CLAIM

Geometric formations appearing overnight in cereal fields, overwhelmingly in southern England, are too large, too precise, and too anatomically strange (bent-not-broken stems, elongated nodes) to be human work. Candidate authors have included UFOs, plasma vortices, earth energies, and intelligences attempting contact via wheat.

THE THEORY, AS ITS PROPONENTS TELL IT

The theory holds that the geometric formations appearing overnight in cereal crops are not made by people, that they are messages from non-human intelligences, plasma vortex phenomena, or the imprint of craft, and that the complexity and precision of the largest designs exceed what could be produced by hand in a few hours of darkness.

Proponents advance specific physical claims: that the stalks in genuine formations are bent rather than broken, with expulsion cavities at the nodes indicative of rapid internal heating; that soil samples show altered crystalline structure and elevated trace elements; that electronic equipment malfunctions inside formations; and that the mathematics of designs such as the 2001 Milk Hill formation, with its 409 circles spanning 240 metres, encodes information beyond decorative intent.

The 1996 formation beside Stonehenge, a Julia set of 151 circles reportedly appearing in under an hour in daylight beside a busy road, is the case most often cited as unexplained by conventional means.

Against this stands a confession. In 1991 Doug Bower and Dave Chorley, two Southampton artists in their sixties, announced that they had been making the circles since 1978 using a plank, a length of rope and a baseball cap fitted with a wire sight, and demonstrated the technique for journalists, including producing a formation that a leading crop-circle researcher then authenticated as genuine on camera. Circle-making has since become an open art form with commissioned works and documented teams. Proponents maintain that Bower and Chorley cannot account for the global distribution or the later complexity, which is the argument this file turns on.

WHAT IS KNOWN

In September 1991, Doug Bower and Dave Chorley , two Southampton-area men then in their sixties, told the press they had been making crop circles since 1976, inspired by reports of a 1966 "saucer nest" in Tully, Australia, and by a shared enthusiasm for pranking UFO watchers. Their toolkit: a wooden plank on a loop of rope, string for the geometry, and a sighting device rigged to a baseball cap for walking straight lines in the dark. They demonstrated the method for journalists, and a formation they made was pronounced authentic by a leading cereologist before the confession was revealed, a controlled test the field did not pass.

Bower and Chorley could not have made every formation, and did not claim to; that is the point. They founded a folk art, and others took it up. Teams of "circlemakers" have operated openly for decades, producing formations of escalating complexity, including commissioned work for advertisers, using the same flatten-and-survey methods. The famous late-period formations (multi-hundred-circle fractals, the 1996 Julia-set pattern near Stonehenge) date from the era of open, competitive human circlemaking, which is what an arms race between artists looks like from the air.

The geographic pattern is equally instructive: the phenomenon concentrates in Avebury-adjacent Wiltshire, an area rich in prehistoric monuments, mystically inclined tourists, and, not coincidentally, media coverage and summer visitor income. Circles appear where circle audiences are.

EVIDENCE FOR

• Formations are genuinely large, precise, and often executed in a single short summer night, an impressive logistical feat, honestly stated.
• Claims of anomalous plant changes (elongated growth nodes, "expulsion cavities") published by W. C. Levengood and associates in the 1990s.
• Eyewitness reports of lights over fields, of the quality typical of nighttime lights generally.

EVIDENCE AGAINST

• A confession with a demonstration, the gold standard. Bower and Chorley showed the method producing the product, including features (swirled lays, standing centers) said to be beyond human means.
• Node elongation does not require mystery physics: flattened stems respond to light and gravity by continuing to grow and bending upward (phototropism and gravitropism), and stems lying in a summer field experience sun and moisture. The anomaly claims lacked blinded controls and independent replication.
• Human teams demonstrably produce formations of the highest observed complexity, on camera, on commission. No formation exists that circlemakers class as beyond technique.
• Complexity tracks human fashion over time (simple circles, then pictograms, then fractals) rather than any natural or extraterrestrial constant.

ASSESSMENT

Crop circles are the rare case where the culprits stood in the field, holding the plank, and a portion of the audience concluded the plank was a cover story. The Office rules the phenomenon an authenticated school of anonymous land art, one of Britain's finer contributions to the genre, and notes that "made by people" and "remarkable" are compatible findings. The wheat was harmed, but only the wheat.

WHAT WOULD CHANGE THE GRADE

• Closed by confession: Doug Bower and Dave Chorley demonstrated their plank-and-rope method to the press in 1991, having begun in 1978, and circle makers have worked openly ever since.
• To reopen: a formation with a physical signature no human method reproduces, made under observation. The claimed signatures, node elongation and magnetic particles, have not been shown to distinguish a known human formation from a claimed genuine one under blind conditions.
• The circles got more elaborate as the makers got better, which is the pattern a craft produces and not the pattern a phenomenon produces.

FURTHER READING

• Crop circle · Wikipedia overview.
• Doug Bower and Dave Chorley, the founders' confession.
• Circlemakers, the practitioners who continued the art.