Just follow the money...but scant-to-zero money is made from the phenomenon of crop formations, which rules-out man as a suspect, IMO.
The exceptions are those uninspired and crude-looking formations that are usually accompanied by their boastful human creators' self-promotions and ego-stroking.
The exceptions are those uninspired and crude-looking formations that are usually accompanied by their boastful human creators' self-promotions and ego-stroking.