And the resulting crop circle, while illegal and irritating to the farmer whose field has been targeted, is usually visually stunning.
But while some crop circles are remembered for their perfect symmetry and unique patterns, others are slightly less impressive.
A series of recent attempts at producing circles have been been met with much derision by fans of the field art after they recently appeared in Wiltshire.
Insiders say a number of top crop circle makers have quit following a clampdown by farmers and moved onto making sand circles, which are legal.
In previous years, impressive crop circles have drawn in thousands of tourists to southern England and some believers who saw the circles as the work of aliens.
But this year visitors have been disappointed by just a handful of crude patterns such as a square, a heart and a small uneven circle.
Former crop circle maker Matthew Williams - who has given up his hobby because he suffers from hay fever - said the lack of competition is driving down standards.
He said: 'The problem is that the best croppies have retired or gone onto something new, so there isn't any competition any more.
'They're all creative types, and without any friendly rivalry, many just can't be bothered.
'All the best crop circles from the last few years have been made by only a handful of people, and they've all hung up their wooden board now and moved onto pastures new.'
Matt, 42, reckons the 15 less than impressive circles that have appeared this year were created by amateurs.
In comparison, seasoned veterans had produced more than 50 by this time last year.
He said: 'Julian Richardson, one of the best croppies ever, has moved on to making sand circles instead.
'He wants to try something different and I think he's fed up with believers trying to make money from his hobby - that he never made a penny for.
'I've retired due to hay fever, and a couple of my peers have just given up as well - it's becoming too difficult.
'The farmers are getting angrier, the believers are getting too demanding and we're still not making any money.'
Matt hit the headlines in 2006 when he became the first person ever to be convicted of criminal damage for creating a crop circle in a field of wheat.
He was caught after setting up a sting to debunk a Ufologist's claim that he could communicate with aliens and would get them to make a specific shape in a field.
Farmers across Wiltshire and Hampshire are also fed up with crop circles and tourists looking to have a 'out of body experience' inside them.
Some have taken the drastic step of mowing the formations out of their fields as soon as they appear.
Dutch crop circle 'expert' Monique Klinkenbergh tried to set up a pass scheme to charge people to look at the circles and walk inside them.
The £60 season ticket was intended to bring in revenue for farmers but it has flopped after it allowed access to only two formations.
Monique and two colleagues Derek Viner and Charles Mallett set up a crop circle information centre at a garden centre in Woodborough, Wiltshire
Matt added: 'Loads of the boys are quitting making them now, because it's being ruined by outsiders like Klinkenbergh who are trying to make money from our hobby.
'We in the circle making community are outraged that outsiders like Klinkenbergh would come in and take over, trying to interfere.
'Farmers are sick to their back teeth too and are cutting more circles out of their field than ever before - if it continues like this, then there won't be any circles at all next year.
'It's such a shame, because myself and a lot of people have had a great deal of fun with crop circles over the years.'
Read more: http://www.dailymail.co.uk/news/article-2381877/Worst-crop-circles-What-happened-patterns-delighted-baffled-world.html#ixzz2afYjIPGR
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