Have a read about the origins of crop-circles.
Even when the originators of them confessed over and over again and explained exactly how they did it it had developed a life of its own. Now people meditate in them. Psychically communicate with aliens, etc. It's an industry. Many many thousands of videos have been sold. There are experts who give lectures.
An interesting side to this is that one of the guys who started it retired when a block of frozen urine knocked him senseless and nearly killed him while he was making one. It had been ejected from a passenger jet.
