Reconstruction of the
2010 Codford St Peter formation
1. Draw a circle. Draw and extend the horizontal and vertical centerlines.
2. Construct the inscribed dodecagon (regular twelve-sided polygon) of circle 1, pointing to the right.
3. Copy circle 1 twelve times, to the angular points of dodecagon 2.
4. Construct a circle passing through the first set of mutual intersections of circles 3 from the center of circle 1.
5. Construct the inscribed square of circle 4, sides horizontally and vertically.
6. Construct the inscribed square of circle 4, pointing to the right.
7. Construct a circle, passing through the intersections of squares 5 and 6.
8. Construct a circle centered at the righthand intersection of circle 7 and the horizontal centerline, tangent to the righthand sides of square 6.
9. Copy circle 8 to the center of circle 1.
10. Draw the twelve rays of dodecagon 2, from the center of circle 1 to the angular points. Mark the upper righthand ray as "a", as shown.
11. Construct a circle concentric to circle 1, passing through the intersection of ray 10a and the upper side of square 5.
12. Construct the circumscribed square of circle 7, sides horizontally and vertically.
13. Construct a circle concentric to circle 1, passing through the intersection of ray 10a and the upper side of square 12.
14. Construct the inscribed circle of dodecagon 2.
15. Construct a "two-points" circle (defined by the two end-points of a centerline) between the righthand intersections of circles 1 and 14 with the horizontal centerline.
16. Construct a circle concentric to circle 1, passing through the center of circle 15.
17. Copy circles 7, 9, 11 and 13 twelve times, to the intersections of circle 16 and rays 10.
18. Construct a "two-points" circle between the center of circle 8 and its lefthand intersection with the horizontal centerline.
19. Copy circles 15 and 18 twelve times, to the mutual intersections of circles 3 just outside circles 17, as shown. See also detail.
20. Circles 1, 7, 9, 14, 17 and 19, are used for the final reconstruction.
21. Remove all parts not present in the formation itself.
22. Colour all areas corresponding to standing...
23. ...or to flattened crop, and finish the reconstruction of the 2010 Codford St Peter formation.
24. The final result, matched with the aerial image.
Copyright © 2010, Zef Damen, The Netherlands

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Mark Fussell & Stuart Dike

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