Again, you've obviously never driven through farmland, in a lot of those places the highway is seriously recessed from the rest. And again, you're making a false assumtion. I have driven through MANY types of farmland, flatland, rolling hills, and mountainous. I know what farm land looks like while driving, rest assured..
Also you've obviously never walked through a late season cornfield, the corn gets taller than people.
You're throwing out a red herring, as the Julia formation in question was formed in wheat..
Wiltshire - July 7, 1996
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.
For one, the wheat isn't that tall. Secondly, the date was July 7, 1996, so I don't think that is harvest time for wheat in England. Additionally, you can see from the image that the field is relatively flat and the vehicles traveling by it have a direct line of sight to the formation..
You are grasping for straws here...
Well if you've driven through farmland then you should already KNOW that sometimes you can't see crap. I drove through a chunk of Kansas it was like a 150 mile tunnel, the surrounding terrain went up from the highway so quickly and so high you couldn't see anything more than about 20 feet away from the road. 150 miles with nothing but yellow grass walls, somebody could have been fighting a war over those hills and there's no way I could have found out (unless a shell hit my car I guess).
Hey you didn't post information on what kind of crop it was. I indicated that, I then shared a bit of my experience wandering through 7 foot tall cornfields, which can be pretty creepy. Wheat can also get pretty damn tall. Thanks for finally providing that date information. All I had to go on was your precious and highly unconvincing picture. Of course even with the date we have no idea how tall the wheat is. Is it early season or late season wheat? We don't know. That's the problem with most of these crop circle pictures, we have no idea of the size of anything and can't truly judge what happened without that information.
The field itself is relatively flat, but you can clearly see where the crop track do their u-turn (very near the highway) you get a sudden forced perspesctive (the curve suddenly looks much further away without enough lateral distance to correspond with that appearance) which is indicative of a sudden slope down and away from the camara. The field is definitely UPHILL from the road. How far? We don't know. There's very little in this picture of any use for actually judging height or distance.