Residents of the village of Mirny, Serpukhov district, are guessing: who could have left two perfectly flat but different-sized circles in the field? The first guess: they were visited by aliens. The mysterious circles during a bicycle ride discovered by a local resident, an employee of the district administration, reports TV channel 360 Moscow region. In general, in the Serpukhov district strangeness began a long time ago. For example, in 1974 in the village of Sharapova Okhota were found the first traces of alien beings. In total, over the years, at least four strange cases have been recorded, which could presumably be evidence of UFO visits.