I don’t know how long the sign has been there, I’m guessing thirty years, but it could do with a clean and some fresh varnish. On the one hand I’d like to leave the lichen undisturbed, on the other hand, the sign is slowly disappearing and it is crucial to the trail directions. It represents the constant dilemma of balance in eco relationships. What is really so important that one life form must surrender to another? Maybe I’ll leave off the varnish.