Crop Circles for Beginners

Since about 1985, crop circles have become a more well-known phenomenon. In the meantime, about 10,000 crop circles have appeared in more than 50 countries. However, well over half of them come from southern England in the area of Stonehenge, Woodhenge, Silbury Hill, White Horse and other prehistoric monuments. Some of them can be proved to have been made by humans, but others just as certainly h...