What do you think about crop circles?

There is no mystery to crop circles, they are entirely man (and woman) made. That has been known for almost exactly 18 years and suspected since 1978.

The crop circles that were first made in 1978 or so were done by Doug Bower and Dave Chorley as a joke, inspired by a practical joke pulled by some farmers near Tully, Australia in 1966. See "Tully flying saucer nest".

Some natural circles are caused by whirlwinds.

The trolls will always say that all of them are 'manmade' by boards and rope.

Crop circles are made by those which have control over gravity and time and visibility. So time control is indeed used while creating them. High advanced physics knowledge, enough to make themselves invisible or cloaked. Only through true understanding, can one come to such conclusions. Others have and I believe them.

Again, this world is bowled over by denial as to what they are about.

Touche......

I like some of the crop circle designs, but blaming them on aliens is a little far-fetched when we have humans confessing to making them.

Crop-circles are made by human beings, or center pivot irrigation

much ado about nothing.