Logging roads typically have a devastating effect on forest ecologies, and attempts to repair them by hauling in loads of gravel not only are costly but fail to fully heal the ecological disruption. In this restoration project, loads of wood chips were laid down in the roads and inoculated with mushroom spawn. The chips prevented erosion while the fungi created a new layer of soil humus, making possible establishment of forest understory plants. Eventually there will be no trace of the logging road. Photo from Fungi Perfecti