If this was posted before...sorry :)
Check out On A Rock In Rural Iowa
As you can see corn and beans aren't the only things Iowa has.....This huge rock is located on Highway 25 .....There is a huge gravel-rock pit here and the kids used to use if for obsenities, etc but since it has been painted like this it has been left alone!!! Quite an impressive sight....
http://www.ticz.com/homes/users/bob/On-A-Rock/On-A-Rock.htm
KC