Line S 11 is a S-Bahn line operated by DB Regio on the Rhine-Ruhr S-Bahn network. It connects Düsseldorf Airport Terminal with Bergisch Gladbach, running via Düsseldorf Neuss, Dormagen and Cologne. From Wikipedia
Halted at Cologne main station, the S11 train yielded 21 loose crayfish handed to animal welfare with investigators now probing their origin.
