A hopeless case at art exhibitions, I ‘m often more interested in the marks on the floor or the stains on the walls than the paintings or other artworks on display. In many of these modern creations, the artist’s ‘intention’ invariably gets in the way. Marks on the wall have none of that overthought effort that screams ‘art at work’ rather like a roadsigns might warn us ‘men at work’. Stains just are, all the more so if they have had to weather time and the elements. There are some most beautiful creations just waiting to be discovered. Here are a few I tumbled on this evening while out walking.