The second tunnel will be in length and run in parallel with the current tunnel in the south on the western portion of Hauptbahnhof and in the north on the eastern portion. It will have three underground stations (Hauptbahnhof, Marienhof, Ostbahnhof) and two surface stations (Laim and Leuchtenbergring). Marienhof, which will be built to the north of Munich Marienplatz station, will be the only all-new station on the line; other stations will be expanded to accommodate the new tunnel. With focus on express service and shorter travel time, the second tunnel will bypass six current stations between Laim and Ostbahnhof.