Colorado Crop Circles! More of 'em!

I know! I need a new hobby. Well guess what! I'm starting one in December!
In the meantime here are more circles I found around here:

From sugar beets to microchips?

To Tom Quinn, the first roundhouse foreman?

?? I got nothing!

They likes trains. Trains am good to FoCo!

People too!

...and some older ones:

In the last of this series I have found some real old ones! Just wait! Oh boy!