Reconstruction of the
2019 Norridge Wood formation
1. Draw a circle. Draw and extend the horizontal and vertical centerlines.
2. Construct the inscribed nonagon (regular nine-sided polygon) of circle 1, pointing to the left.
3. Construct a circle centered at the righthand intersection of circle 1 and the horizontal centerline, passing through the nearest upper angular point of nonagon 2.
4. Copy circle 3 to the lefthand intersection of circle 1 and the horizontal centerline.
5. Construct a circle concentric to circle 1, tangent to circle 3 at the lefthand side.
6. Construct the inscribed equilateral triangle of circle 3, pointing to the left.
7. Construct the inscribed equilateral triangle of circle 3, pointing to the right.
8. Construct a "three-points circle" through the upper and lower intersections of triangles 6 and 7 and the righthand intersection of circle 3 and the horizontal centerline.

(Note, that this is one half of the construction of the inscribed Vesica Pisces).
9. Construct a circle concentric to circle 1, tangent to circle 8 at the lefthand side.
10. Draw the connecting line between the uppermost and leftmost angular points of nonagon 2.
11. Draw a line from the intersection of line 10 and circle 4, perpendicular to and upto the vertical (and therefore parallel to the horizontal) centerline.
12. Construct a circle concentric to circle 1, tangent to line 11.
13. Construct a circle centered at the righthand intersection of circle 4 and the horizontal centerline, tangent to circle 12 at the lefthand side.
14. Copy circle 13 to the center of circle 1.
15. Circles 1, 3, 4, 5, 9, 12, and 14, are used for the final reconstruction.
16. Remove all parts not visible within the formation itself.
17. Colour all areas corresponding to standing...
18. ...or to flattened crop, and finish the reconstruction of the 2019 Norridge Wood formation.
19.

The final result, matched with two aerial images.
Copyright © 2019, Zef Damen, The Netherlands
 

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Mark Fussell & Stuart Dike

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