According to some UFO researchers and crop circle enthusiasts, real crop circles (those that are not man-made), are messages from extraterrestrial beings.
Some researchers suggest that crop circles first appeared in the UK in 1930’s but the first clear aerial shots were captured in the fields of southern England in the mid-1970’s. During these times, crop circles were just simple geometric shapes such as square, circles, and triangles. As the phenomenon became more popular, the new ones have become more intricate and full of cryptic messages. People believe that this strange occurrence is not done by any man because most of them are reported to have been created overnight and without any traces as to how they were created. Other accounts have also claimed that before and during the formation, UFO sightings have also been reported near the areas where they appeared.