Negative Spaces on a Wonderful Day

The afternoon was cold, raw, and overcast, but I still went on a walk at Field Farm with my sketchpad intending to draw something.  I stopped at this mass of tree trunks framing more tree trunks.  Drawing furiously, I focused on the negative spaces keeping with the mood.  When done, I kept walking noting that it was a wonderful day. 9x12 inches, pencil on paper.