Reconstruction of the
Chirton Bottom 16-06-2010 formation

1. Draw a circle. Draw and extend the horizontal and vertical centerlines.

2. Copy circle 1 to its upper intersection with the vertical centerline.

3. Copy circle 1 to its lower intersection with the vertical centerline.

4. Construct the inscribed regular 63-sided polygon of circle 2, pointing down.
(For clarity, the angular points are marked).

5. Draw fifteen rays of polygon 4, all from the center of circle 2, the first to the lowermost angular point, the others to every fourth angular point, counted counterclockwise, as shown.

6. Construct a circle centered at the intersection of the second ray 5 and circle 2, tangent to the first ray 5, as shown.

7. Copy circle 6 two times, to the centers of circles 2 and 3.

8. Copy circle 6 to the center of circle 1.

9. Copy circle 6 to the intersection of the third ray 5 and circle 2, as shown.

10. Copy circle 6 twelve times, to the intersections of all other rays 5 and circle 2.

11. Construct a circle concentric to circle 3, passing through the upper intersection of circles 6 and 9.

12. Copy circle 11 to the center of circle 2.

13. Copy circle 6 to the fourth angular point, counted clockwise from the lowermost angular point of polygon 4, as shown.

14. Construct a circle, passing through the lower intersection of upper circle 7 and the vertical centerline, tangent to circles 6 and 13 at the near sides.

15. Copy circle 14 fifteen times, to the intersections of rays 5 and circle 2.

16. Construct a "two-points" circle (defined by the two end-points of a centerline) between the center of circle 14 and its upper intersection with the vertical centerline.

17. Construct a "two-points" circle between the center of circle 16 and its upper intersection with the vertical centerline.

18. Copy circle 17 fourteen times, to the angular points of polygon 4 in between circles 15.

19. Copy circles 6, 8, 9, 10, 15 and 18 as a whole, while rotating about the center of circle 8 by 180°.

20. Construct a (small) circle centered at the righthand intersection of lowermost circle 15 and circle 2, passing through the lefthand intersection of lowermost circle 18 and circle 2.

21. Construct two circles concentric to circle 2, tangent to circle 20 at both sides. See detail.

22. Copy circles 21 to the center of circle 3.

23. Circles 6, 7, 8, 9, 10, 11, 12, 15, 18, 19, 21 and 22, are used for the final reconstruction.

24. Remove all parts not present within the formation itself.

High resolution dwf-file

25. Colour all areas corresponding to standing...

High resolution dwf-file

26. ...or to flattened crop, and finish the reconstruction of the Chirton Bottom formation of 16-06-2010.

High resolution dwf-file

27.
Courtesy the Crop Circle Connector
Photo by: John Montgomery
The final result, matched with the aerial image.