People in the foggy country discovered many large concentric circles in a vegetable field last week.

Five concentric circles in a canola field in Wiltshire county on April 14. Interspersed between them are symmetrical circular arcs of decreasing size.

The circles – nearly 20 meters in diameter – were discovered in a rapeseed field in Wiltshire county, England on April 14. One of the experts on giant circles in the fields, photographer Lucy Pringle, said: “Among the hundreds of shapes that I photographed, none of them had the same shape as the others.”

The formation of crop circles remains a mystery. Some people believe that some scientists created them through the efforts of volunteers. However, many argue that people do not have enough time to complete the circles in one evening because they are too large. Some people also claim they are messages from an extraterrestrial civilization.

Another theory is: A huge source of energy accumulated 70-400 km above the earth’s surface (where there are many ions) was released into the canola field and created circles. Previously, people had discovered a number of other strange shapes in fields in Wiltshire county.

Lines forming a bee-like image at Milk Hill, Wiltshire in 2004.

Giant rectangle at East Field, Wiltshire in 2003.

A three-dimensional view of Silbury Hill, Wiltshire, in 2007.

Last year, a shape resembling the mathematical letter Pi was discovered in a barley field near Wroughton, Wiltshire.