The Lebach–Völklingen railway is a single-track branch line that originally ran from Lebach to Völklingen in the German state of the Saarland.

Towards the end of the 19th century the towns of the Köller valley were becoming residential areas for ironworkers and miners employed in the Saar region.

However, the workers initially had to walk the long distances to their jobs so sought a railway to open up the Köller valley.

After several submissions and petitions the construction of the Koller Valley Railway was approved by the Prussian king under law number 25 on 15 June 1906.

The new route ran through the newly built Heidstock Tunnel under the road, a few hundred metres east of the old crossing.

After the war, there were at first ideas of abandoning the route, especially after the Dilsburg pit was closed in 1931 due to the global economic crisis.

[4] After the Second World War, the line was not put back into operation over its whole length until a temporary restoration had been carried out on the Eiweiler viaduct in 1947.