Their intricate designs and the shear impressive size of them takes meticulous planning and precision execution.
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.
See them all at Mail Online.