France , Valendole, was the 1965 when a farmer of the place, M. Masse , Stated that a spaceship had landed in his field, leaving the enormous circles . Later in 1981 In the city of Trans-en-Provence , Only 48 km by Valendole, another farmer said that an unidentified object had landed in his plot of land, the French government sent a team of experts to perform an inspection that took the field where he landed the airplane was subjected to a strong electromagnetic field that it would lead to the required temperature of 600 ° C . In these first two events was followed by many others during the Eighties , Particularly in England and Japan It is noteworthy that the perfection of some of these designs has led investigators to completely discard the hypothesis that this is only the consequences of tornadoes . The last case that remains is that advocated by many experts ufologist: these symbols or designs, as it were, another can not be that signs of landing of unidentified flying objects or symbols left extra-terrestrial entities on our planet and how to identify , classify and then you can recognize from long distances (given their huge size)!