commuting metro movement moving Nyberg passenger scene scenery speed subway transport travel tube tunnel Underground urban communication crowd going home Mexico on the move passengers people public transportatio railroad train black ceiling colorless colourless commute concrete dark DC Federal Triangle gray grey grim repetition station structure tiles transportation Washington Cerro de la Silla city landmark metropolitan Monterrey mountain Parque Fundidora skyline 60s bonn clean germany green sixties forest spider trees web woods