Dortmund-Lütgendortmund station is a single-track, underground terminal station in the city of Dortmund in the German state of North Rhine-Westphalia. The platform is accessible by stairs, escalator or lift. It was opened in 1993 at the end of an extension of Line S 4 trains of the Rhine-Ruhr S-Bahn. Trains reverse here in order to return to Unna station. It is classified by Deutsche Bahn as a category 5 station. History The station was built as part of the extension of a fragment of the Rhenish Railway Company's Ruhr line, which opened in 1874. Line S 4 services commenced operation to the station on 23 May 1993. The nearest bus stop had been called Lütgendortmunder Markt, but it was renamed Dortmund Lütgendortmund S-Bahn station. Extension of the S 4 line from its current western end in the tunnel at Dortmund-Lütgendortmund was formerly planned to be implemented with a target of opening it in 2015. This would have included an extension of the single-track tunnel to the immediate south of Dortmund-Bövinghausen station. The S 4 would run from there to Herne on the Duisburg-Ruhrort–Dortmund railway (the Emscher Valley Railway of the Cologne-Minden Railway Company) and there take over the Herne–Essen branch of the current S 2 line. The Emschertal-Bahn (RB 43) Regionalbahn service would only operate between Herne and Dorsten. The eastern section of the Emscher Valley Railway between Dortmund-Bövinghausen and Dortmund Hauptbahnhof would be used by a new line of the Dortmund Stadtbahn. For a long time funds have been available for the construction of the line to Bövinghausen, however, the financing for the operation of the line is not guaranteed. The Emschertal-Bahn runs between Dortmund-Bövinghausen and Herne every hour, but the S4 would run between Herne and Essen every twenty minutes as an S-Bahn service, so the Verkehrsverbund Rhein-Ruhr would have to fund the increased services through savings in other areas. Upon taking office, the transport minister Oliver Wittke called for all such proposals to be re-evaluated. The line extension has been removed from the integrated transportation plan for North Rhine-Westphalia; a resubmission is possible from 2015. Lütgendortmund has other railway stations. The former Lütgendortmund station at the district border with Marten and Kley is now called Dortmund-Germania, after the former Germania colliery. There is also Dortmund Lütgendortmund Nord station on the Duisburg-Ruhrort–Dortmund line. Rail services The station is served by S 4 services between Lütgendortmund and Unna via