Stencil graffiti, train station, Apt

You pick up the walking trails in Apt by going to the old train station. The trail is the old rail bed. The back of the station has the usual graffiti, most of it lacking any originality, but this struck me. I have never seen graffiti on a rock. This stencil was repeated on the building. It's a rather sad picture of a young man. I have made up numerous stories in my head about what or who he was.