The article within that link, “One Woman’s Arduous Journey, etc” is really mind-blowing, when you see the complexity of the designs she has photographed in England, assuming they are verifiable. Not just your granddad’s circles — these are like precise digital images in a variety of patterns.
I’m guessing that it is (or some are) due to something like ball lightening. With the electrical fields concentrating in certain areas (like England) due to the geology (faults, magnetic materials, etc.) Others seem way too complex for that - however, snowflakes also make some pretty complex shapes and designs.
I seem to recall videos of a ball of light chasing around a field at night and then a crop circle the following day. I think with all of the hoaxes nowadays it takes some effort to figure out the hoaxes (crushed crops) versus real ones (bent crops, super-heated with nodes exploding, etc.)
I am unsure where I stand on crop circles.
On one hand, there is no doubt some are so huge and complex, that no human could make them with such precision. I mean don’t any of these farmers have barking dogs?
Where are the interrupted crop circles?
On the other hand, aren’t there any of these in regular fields of grass or whatever without tracks?
So I am still on the fence when it comes to CC’s.