The original
Zealand South Line was completed for the privately owned
Zealand Railway Company () and opened on 4 October 1870. It connected (and thus
Copenhagen via the
West Line) with on the south coast of
Zealand via , and . In 1880, the Zealand Railway Company was taken over by the Danish state, and in 1885 became part of the national
railway company DSB. After the opening of the Ringsted-Næstved Line in 1924, most trains between Copenhagen and South Zealand used the route via instead of the original route via . The rump section between and via became known as the
Little South Line (). On 26 September 1937, at the opening of the
Storstrøm Bridge that crosses the Storstrømmen strait between the islands of Masnedø and Falster, the South Line was connected directly with
Falster, the
Falster Railway and the rest of the rail network in
Lolland-Falster. == Future developments ==