Many years ago this was a shed for storage of silage on the farm. That was when dairy cattle were the big thing. Now days, Paul is growing berries, nursery stock and grass seed, so the old bin is used for wood shavings which are used for mulch in the blueberry field. I thought this was an interesting contrast in colors.
The shape of the light line on the concrete makes me think of waves. The contrast between light and dark reminded me of a similar photo:http://www.pbase.com/image/30313748 .