Overview: Crop Circles: Secret Messages from Crop Circles? Some believe they are a method of communication from alien visitors, others see them as messages from the spirit world. Skeptics write them all off as a gigantic hoax, but serious investigators aren't so sure. How could matching crop circles be created in England and the United States at the same time? How could a crop circle be created in Germany that matched ancient gold, silver, and brass plates that were later discovered? With each new discovery the mystery and the controversy intensifies.