UFOs caught making crop circle for the 1st time?

According to Gary King, He had a vision in a dream, to be at a certain place to witness a real ufo crop formation, which he has captured on camerea. Real or not it is a very impressive crop circle that would have taken hours to complete. Question is, Is it Alien or manmade? Carlos Clemente presents information on the experience of Gary King and his experience to witness the appearance of a Crop Circle in England