A "river" of grease dripping down the side of a locomotive - past a rivet hole. I did "blow out" the highlights a little on this one - glossy black paint is sometimes difficult to meter correctly -
Cool. 'Boy is that right about the reflections from grease & high-gloss black paint.
'Never would have seen this composition. The mrs. did a double-take when she saw it - not knowing what it was. Bravo for seeing it, much less getting the tough shot.