- This enigmatic formation recently appeared near a Windmill in Wilton, Wiltshire. See more pictures here. Some people think this represents binary code for Euler’s Theorem which describes a deep relationship between trigonometry, exponential and imaginary numbers. See the flash animation illustrating the idea that the Wilton crop formation represents Euler’s Theorem. What do you think? If you want to see the crop circles this summer, join us on the Crop Circle Tour.