The series of gouaches Aus der schwarzen Kiste (from the black trunk) suggests that you look out of a dark trunk through a keyhole. In the pawn-like recess you look at landscapes in which man has intervened in one way or another.
Here are trees on both sides with a chimney from a petrochemical plant in the middle. Due to the soft pink and green and the flowing way of painting, the factory that infringes on nature nontheless looks kind of idyllic.