This photo is another from the Blue Heron paper mill site, sitting empty and awaiting its next incarnation. The buildings are all growing something green on them be it moss or ferns. The rectangular pattern of these moss mounds growing along the seams of this rooftop helped give an oddly regular shape to something that generally grows more random.
I love that even though the moss has shape to it, the distribution is broken up by solitary clumps strewn here and there between the lines. It reminds me of heavily divided agricultural lands with trees dotting the landscape and lining the grid of roads.
It looked like a landscape as seen from far above in Google Maps. I'll be interested to see how this landscape changes between now and when this building is eventually renovated or demolished.