A crop circle is a flattened pattern in a field of anything: wheat, grass, oilseed rape, rice, etc. The pattern can be anything as well: a circle, a ring, a combination of shapes, a complex mandala, but also sloppy scrawls. Sometimes the geometry is breathtaking, sometimes it's a mess.
The plants inside a crop circle are flattened to the ground, as if a stamp was pushed from above into the field. The plants however are not dead. They continue to grow, first horizontally over the ground and then, after several hours, they bend upwards towards the sun.
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