Circles on the field and other formations. France

In the morning the clear sky circling aircraft. Under the wing floated villages, arable land, a grove of ancient Burgundy. Professor Goga, a passionate lover of photography, shot most spectacularly lit landscapes.
The plane was flying along the Burgundy canal. Suddenly... HOGA ceased to believe his eyes. Near the city of Dijon, among a field of alfalfa, he saw a huge, correct form ring. It seemed that under the ground there is a giant circle – and the grass more dense and vivid than on the entire field, clearly outlined it. Nearby were visible the other ring, however, no such visible and smaller.
Gaga lost the rest. What lies under the ground? A century or a Millennium has left its mark on the alfalfa?
Gaga he shared his discovery with the archaeologists. Began the preparatory archaeological work, a number of hypotheses. Some scientists suggest that under the green circles are hidden sanctuary of the bronze age, others expect to find the underground remains of the medieval castle, once surrounded with a ditch, through which water once flowed. In their opinion, the groundwater continues to circulate, and now, giving extra moisture to the plants.
But while the mysterious circles on the alfalfa remain a mystery.

Translated by «Yandex.Translator»