""Take the pattern and draw radial lines from the center of the central depression through each radial jump," Reed e-mailed the Earthfiles.com Web site. "Take the smallest angle sector and call it one (1), then compare the other 10 sectors contained angle to the smallest and pick the closest single digit for the ratio. They come out as 3.141592654."

As any math geek knows, that's the first 10 digits of pi, the irrational but extremely important number that's defined as a circle's circumference divided by its diameter."

Crop Circle Pi