Thousands of people are trekking to a Bavarian farmer’s field to check out a mysterious crop circle that was discovered by a balloonist last week. Farmer Christoph Huttner, who owns the wheat field near Weilheim, told the dpa news agency Tuesday that he didn’t create the circle himself. He suggests students on summer holiday may have cut the image with a 75-metre diameter into his field. The news agency says thousands of visitors have come to sing, dance and even swing pendulums in the giant image.