Over the decades, a number of crop circles have presented an undeniable challenge to those who still insist that  human beings are the sole creators of the crop circle phenomenon. The Woodborough Hill Crop Circle that appeared on August 12, 2000, and which was the finale of the 2000 crop circle season, is one such formation.

At the time it was one of the most complex and geometrically rich patterns ever to appear. It sat nested between Picked Hill and Woodborough Hill, close to Alton Priors and Alton Barnes. The formation measured 250 feet in diameter and was composed of over 300 individual standing triangles that were arranged around a set of thirteen concentric rings. The triangles created an effect of spiraling curves which crossed and overlapped.
 
The Woodborough Hill formation also had the unmistakable geometric imprint of various natural forms, such as a sunflower seed head, pine cone etc. This template is created by interlocking Fibonacci spirals. It followed the pattern of previous (and subsequent) crop circles that depicted mathematical sequences that generate natural forms. The Fibonacci curve is also a proto fractal. It is self-referential and mandala-like at any point down its curvature.

This spectacular design was based on the Golden Mean spiral, a mathematical ratio found in nature, and commonly referred to as phi. There is a way to draw a Golden Mean spiral by using a square and applying the phi ratio (1:1.618) to generate the various compass points required to grow the spiral. In the case of the Woodborough Hill 2000 crop circle, this would have to have been repeated 22 times, reversed and then overlaid. Fourteen concentric rings would then have to be inscribed to complete the matrix. Then the crops would have to have been laid down in alternate segments. If you’re feeling lost here, then you’re getting the point. This is almost (if not in fact) a supernatural task.

In addition, the entire 'sunflower' crop glyph consists of 22x2 spirals (clockwise, and counterclockwise), followed by 14 radial circles. Effectively this produces 44/17, or 22/7 – that other most significant mathematical ratio - the ratio of a circle's circumference to its diameter in Euclidean geometry (3.141...) - called pi.

Once again, the Circlemakers used brilliance and beauty in a most benevolent form of communication to beguile us into wonder and enquiry.