Reconstruction of the
Barbury Castle 24-07-2002 formation

1. Draw a circle.

2. Draw the right half of the horizontal centerline (ray nr. 0).

3. Copy line 2 (ray nr. 0) 23 times (24 in total) and divide all rays evenly around circle 1.

4. Construct a circle tangent to circle 1 at the inner side, tangent to line 2 (ray nr. 0), and tangent to ray nr. 1 (counted counterclockwise).

5. Construct a circle concentric to circle 1, passing through the center of circle 4.

6. Construct a circle with its center on the vertical ray up (nr. 6), passing through the center of circle 1 and tangent to circle 5 (at the inner side).

7. Copy circle 6 5 times (6 in total) and divide all six evenly around circle 1 (with centers on every fourth ray).

8. Construct a circle concentric to circle 6, tangent to circle 1 (at the inner side).

9. Copy circle 8 5 times (6 in total) and divide all six evenly around circle 1.

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

11. Copy circle 6 another time, to the intersection of circle 10 and ray nr. 7, as shown.

12. Copy circle 11 5 times (6 in total) and divide all six evenly around circle 1 (with centers on every fourth ray).

13. Copy circle 8 two times, to the center of circle 11 (on ray nr. 7), and to the center of the upper right circle 7 (on ray nr. 2).

14. Copy circle 8 another time to the upper right intersection of circles 13.

15. Copy circle 14 5 times (6 in total) and divide all six evenly around circle 1.

16. Copy circle 1 to the end-point of line 2 (ray nr. 0).

17. Copy circle 16 5 times (6 in total) and divide all six evenly around circle 1.

18. Copy circle 5 to the center of circle 16.

19. Copy circle 18 5 times (6 in total) and divide all six evenly around circle 1.

20. Copy circle 1 another time to the upper right intersection of circle 16 and upper right circle 17.

21. Copy circle 20 5 times (6 in total) and divide all six evenly around circle 1.

22. Extend rays nrs. 0 and 6 until they intersect circles 15 (on the right) and 14, respectively.

23. Copy circle 6 two more times, to the end-points of both extended rays 22.

24. Construct a circle concentric to circle 1, tangent to circle 23 on the right, at the right side.

25. Construct a circle concentric to circle 1, tangent to upper circle 23, at the upper side.

26. Circles 1, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 24, and 25 are all needed to finish the reconstruction.

27. Cut away all parts of circles 16, 20 and 25, and circles 1, 17 (upper right) and 18, respectively, until two "islands" remain, as shown (shaded).

28. Do the same for circles 5, 9 (lower right) and 15 (right), and circles 7 (lower right), 10 and 12 (upper right), until two smaller "islands" remain, as shown (shaded).

29. Repeat steps 27 and 28 for all other corresponding circles.

High resolution dwf-file

30. Colouring all "islands" green, corresponding to standing crop...

30. ...or just the opposite, colouring flattened crop, finishes the reconstruction of the Barbury Castle 24-07-2002 formation.

31.
courtesy the Crop Circle Connector
photo by: Stuart Dike
The final result, matched with the aerial image, shows that it does not fit precisely everywhere.