Updated March 2023: note that this tunnel no longer exists due to the development of the new JR Yamanote line station, Takanawa Gateway Station 高輪ゲートウェイ駅. Duck! Shinagawa  Station straddles a vast tangle of tracks that accommodate such train lines as the Yamanote, Tokaido, Yokosuka, Keihin Tohoku, Narita Express, and Keikyu Main Line. While this makes for … Continue reading that tunnel near Shinagawa where you have to duck