by Haggis_McMutton on Tue Nov 13, 2012 6:01 pm
They are most likely man made.
The ones that show changes in the soil and the expansion of the wheat mentioned in your last paragraph are the most interesting ones imo. I've seen a documentary where they were able to replicate all of those things, but they needed some microwave source to do the expansion thing and some other device to spread the iron and other substances over the area. So it's definitively possible that people are doing that too, but one has to wonder why the f*ck they're going to the trouble. I suppose it might just be to make them seem more authentic.
So again, it's significantly more likely that they're man made than anything else, but I still have some curiosity about the "real" ones.
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