Harzquerbahn
The Langelsheim–Altenau (Oberharz) railway (also known in German as the "Innerstetalbahn"—"Innerste Valley Railway") was a railway line, that ran through the Upper Harz in Central Germany. It was also called the Upper Harz Railway or Harz Railway. It was built in order to enable the Magdeburg-Halberstadt Railway Company ("Magdeburg-Halberstädter Eisenbahngesellschaft" or "MHE") to access the mines in the Harz mountains.