 The most striking construction on the Egge Railway is the 1,631 m long Rehberg Tunnel at Altenbeken.As late as the 1980s there had been for years a continuous long distance express ("D-train", "D-Zug", short for "Durchgangszug", literally “corridor train”) with through carriages that were separated in Altenbeken and continued towards Höxter.In the 1990s through trains also ran on the line from Ottbergen to Nordhausen in Thuringia.