East Field, near Alton Barnes, Wiltshire, 3 June 2007. Right: Milk Hill, near Alton Barnes, 7 June 2007. In a detailed analysis, Bert Janssen shows that these two formations can be perfectly superimposed, and that the resulting design embodies everything from threefold to ninefold geometry, together with the squaring of the circle
June 2008-Complex: The formation is 150 metres in diameter.He said the crop pattern 'clearly shows' the first ten digits of pi, which - as many will remember from their schooldays - is used to calculate the area of a circle using the formula Pi r squared. Mr Reed said: 'I noticed a photo of the Barbury Castle pattern. It shows a coded image representing the first ten digits of Pi - the ratio of the circumference of a circle to the diameter.
Once again, in Wiltshire England, in East Field, this one appeared in 1998. It is one of the largest ever spotted and holds the record for the largest area of bent over crop within its boundaries - 1.6 acres!