[FormerLurker]

Depending on the height change from highway to crop and the hieght of the crop you could hold a freaking concert in that circle and the people on the road wouldn't see it.

I seriously doubt that. And I also seriously doubt that a team of individuals could have created that formation in broad daylight without being seen, especially within the timeframe of 45 minutes..

[discostu]

Again, you've obviously never driven through farmland, in a lot of those places the highway is seriously recessed from the rest. Also you've obviously never walked through a late season cornfield, the corn gets taller than people. Depending on the terrain, the crop and the age (which since it's all brown would indicate late, ie tall) it's not too hard to have a 20' "wall" on either side of the highway about 15' laterally away from it, as long as what you're doing doesn't cross the visibility line (which would be the extension of the line from your eyes to the top of the the highest crop you can see) it's invisible. And given the serious angle of that site line that's gotta stick up pretty tall (20' higher for every 15' of lateral distance from you, so something 60 feet from the road would have to stick up more than 80' in the air (getting a bonus from being on a hill relative to you of course) to be visible. Now given that a standard 18 wheeler is about 60' in length and I guessed 2 18-wheeler lengths (or 120') that means that in order to be visible from the road something would have to stick up 160' in the air to be seen from the road (that's at the point of the crop circle nearest the road). Now which is most likely to be able to bend some stalks and NOT stick up up 160' in the air: people with rope and plywood or a flying saucer.

[PatrickHenry]

Back in post 462, when I described how to make a complicated crop circle, I said "You can be precise laying out the diameters by using a compass rose at the center stake." What I had in mind is something like this:

It could be fairly small, with raised wooden "fins" to guide the ropes. The result should be extremely precise. With the compass rose greatly exaggerated in size, the guys with the ropes who mark out the diameters would look like this (and it wouldn't take anywhere near this many people):

Additional circles can be made, just by changing the length of the rope tied to the center stake. As each new circle crosses a diameter line, you can "connect the dots" with more rope to create something that looks very much like a spider's web. It should be fairly easy to construct a very intricate design in very little time. This ain't rocket science.