While looking at fields on a country back road we spotted a silage pit.  Immediately I was interested because of the look of the pit.  It was made very low to the ground due to small equipment owned by the farmer.  The other key characteristic was that the pit was covered in dirt and plastic and not tires.  The dirt was quite loose on the top of the pit and was not packed itself.  To feed his dairy animals, the farmer would pull up to the pit with his small wagon and tractor and pitch the silage into the wagon by hand.  Yes I said by hand.

Here is a picture of the dairy that owned the silage pit.