This picture was taken in the Peavy Arboretum, a gateway to the research forest managed by Oregon State University (OSU). The research forest has a number of groves in which tree growth is monitored, and experiments are run to understand principles of forest management and forest biology in general.
This picture was taken on the Intensive Management Trail, as the sign indicates. The link with this quarter's Wood theme should be obvious, but this picture is also interesting because of the arrangement of the trees. It turns out the trees in this grove are planted in a regular pattern. The pattern is somewhat visible if you look at the area in Google satellite view, and is clear if you look down the path to the right of the sign.
The pattern is less clear, even disappears entirely, when looking at other directions. The pattern also comes and goes if one walks around and looks at the forest from different viewpoints. There are some clear metaphors here with how we see the world around us.