Berlin Nord-Süd Tunnel
The 181st longest tunnel in the world
The North–South S-Bahn Tunnel (Nord-Süd-Tunnel) is the central section of the North–South transversal Berlin S-Bahn connection crossing the city centre. It is not to be confused with the Tunnel Nord-Süd-Fernbahn, the central tunnel part of the North–South main line used by intercity and regional trains. The S-Bahn North–South line encompasses the route from Bornholmer Straße and Gesundbrunnen via Friedrichstraße and Anhalter Bahnhof to Papestraße (today Südkreuz) and Schöneberg. The North–South S-Bahn Tunnel has a limited profile (loading gauge - G2) with a height of 3.83 metres (12 ft 7 in) above the trackhead and a width of 3.43 metres (11 ft 3 in).
Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).