If you're going to make a claim like this, it's usually a good idea to provide some evidence for the assertion. You need to demonstrate that the phenomenon actually exists before you can expect people to explain it.
Assuming it is true, I will make a guess. The hoaxters who have been making these crop circles for dozens of years are either big fans of the Ancient Aliens shows or are capitalizing on the 2012 hysteria.
Recently i watched a documentary on the circles and how someone connected Mayen symbols with them. It was uncanny. I know there are hoaxes out there but most of the intricate designs can not be done, even in one night! I believe a majority of them are real!
Its no surprise about these Mayan symbols when you consider what we're still finding out about how truly advanced they really were. And if a recent NY Times best-seller is correct then they were even tracking and predicting time/dimensional portal openings on Earth and in Space. Its doubtful they came on this kind of ability all by themselves if this is right. Kinda makes Pakal the Mayan Astronaut take on a whole new meaning.
Some of the makers of the crop circles have shown how they do it on TV in the UK. There are websites about how to do it (it's very low tech from what I remember - rope and a plank of wood). Not sure if any of the symbols they choose are Mayan, think a lot of them are just in it for a laugh
The man-made circles don't display exploded nodes. If you don't have a clue what I'm talking about...in legit circles, the nodes on the plants in the circle have literally exploded, There are other aspects which separate the hoax from the real thing.
Could you please explain what a "literally exploded" wheat or corn node looks like, versus one that exploded due to the mechanical action of being bent and trampled by a wooden plank or someone's shoe?
In fact, has there ever been any attempt to use microwaves on corn or wheat stalks in a field to attempt to create a "genuine" crop circle?
Having read W.C. Levengood's paper, I'm afraid I don't buy the supernatural explanations. They found "correlations" in the stunting of corn or wheat kernel development in plants that have been flattened, and leap to the conclusion that this can only be explained by something paranormal, versus the more logical explanation that the kernel growth was stunted because the plant was damaged by circlemakers.
Interesting video with the nodule expansion and heat distribution Mark. The Crop Circle phenom is a classic example of too many looking at the cover or reading a few pages instead of the whole book. How anyone can think hoaxers can form three-dimensional appearing, interwoven crops, with their molecules altered, many at football fields in length, and extremely complex patterns often in a matter of hours or less and often in broad daylight is beyond me. Sure there are practiced hoaxers but that's just the first chapter in a very lengthy story. Whatever the source[s] of the true crop circle makers are trying to say they're saying it very loud and increasingly clearly. At least to the extent of what we're able to understand with our present level of scientific, archeological, and historical knowledge.
I agree Alastar that some of these crop circles are just so detailed and so large, also not forgetting numerous, to be just the work of hoaxers. I mean there is a massive interest in this phenomenon which has a large following of seekers to these lands where they take place.
Which means most of these areas are being watched most of the time, if not more than we know of, as the timing of these phenomenon’s are a great importance to those researching them. As most will have to get there as soon as possible to take images and investigate the site before people trample on evidence and or the farmer decides to flatten it all down with his tractor.
The problem I have mostly is with the assumptions of others who all too easily claim it must be a fake, without any evidence or investigation of their own. To be honest, with a little research you can be very surprised to learn what others have already discovered.
To keep on subject somewhat to the OPs question that yes there are many Mayan symbols but there are also many other detailed crop circles too. There are but to mention just a few, crop circles that detail binary codes, planetary alignments, references to science and DNA, and well the list goes on.
Also there have been some very interesting anomalies found with the nodes of the crops as you mentioned AP, plus many more besides. To me there is definitely something going on besides a group of crop making fanatics.
Yes you did and they are a fascinating result for some of these phenomenon’s, some of the research suggests that there was some sort of extreme heat present at the time but not enough to burn them, strange stuff.
Most people still think that two old guys in England are responsible for them. Grew up in corn country. All we ever did was cowtipping (The better the cow, the bigger the tip!) We didn't lack for imagination. Knowing cows will ascend but not descend a staircase left one standing in the hallway of a local college. It was fatally removed.