Reconstruction of the Silbury Hill 4-06-2002 formation
1.		Draw a circle. Draw the horizontal and vertical centerlines.
2.		Construct a circle centered at the upper endpoint of the vertical centerline, passing through the right (and left) endpoint of the horizontal centerline.
3.		Repeat this three times for the other endpoints of both centerlines.
4.		Copy circle 2 four times to the outer mutual intersections of circles 2 and 3.
5.		Construct a circle with its centerline between both intersections of the two upper circles 4. Repeat this for the two lower circles 4.
6.		Construct a circle concentric with the rightmost circle 3, tangent to upper left circle 4 at the near side.
7.		Repeat this for the leftmost circle 3, tangent to the upper right circle 4.
8.		Construct a square, tangent to and enclosing all circles 4.
9.		Construct the circumscribed circle of square 8.
10.		Extend the horizontal centerline up to circle 9 to the right.
11.		Construct the circumscribed square of circle 9 with its sides parallel to those of square 8, as shown.
12.		Construct the circumscribed circle of square 11.
13.		Construct a circle centered at the upper right corner of square 8, tangent to the closest circle 4, at the near side.
14.		Construct a circle, tangent to circle 13 at the upper right side, and tangent to both the right and upper sides of square 11.
15.		Construct a circle centered at the upper right corner of square 11, tangent to circle 14, at the near side.
16.		Construct a line, tangent to circles 13 and 15 at their upper left sides.
17.		Construct a circle concentric to circle 14, tangent to line 16.
18.		Construct a circle concentric to circle 1, passing through the center of circle 17 (and 14).
19.		Draw the connecting line between the upper right and the lower left corners of square 11.
20.		Copy circles 13, 15 and 17 to the opposite intersections of line 19 and circles 9, 12 and 18 respectively.
21.		Draw a line from the right intersection of circles 1 and 2 and the upper left intersection of circles 2 and 3. Repeat this for the left intersection of circles 1 and 2 and the mutual intersection of circles 3 at the lower right.
22.		Extend both lines 21 up to circle 12, the first to the upper left, the other to the lower right.
23.		Copy two sets of circles 13, 15 and 17 to the respective intersections of lines 22 and circles 9, 12 and 18.
24.		Circles 1, 2, 3, 4, 5, 6, 7, 13, 15, 17, 20 and 23 together form the basis for the final reconstruction.
25.		Remove all parts of these circles not visible in the formation. High resolution dwf-file
26.		Making black all areas corresponding to flattened crop finishes the reconstruction of the Silbury Hill 4-06-2002 formation.
27.	courtesy The Crop Circle Connector photo by: Steve Alexander	The final result, matched with the aerial image.
Copyright © 2002, Zef Damen, The Netherlands Personal use only, commercial use prohibited.
Since 1-Februari-2005