Soon, the line began to be expanded until it reached 55 km in less than ten years. Initially, it was only used to transport goods. At the beginning of the 20th century, however, queues with only passenger cars began to appear, which in the summer ran with specially adapted open cars.

The destruction of the Low Lands at the end of World War II also affected the depots and tracks of the narrow-gauge railway. After the war, it was reconstructed and although many connections were made, the crisis of narrow-gauge railways began in the 1950s. It was caused by the increase in road transport and the expansion of railway lines.

As a result, more and more lines were closed. In the mid-seventies, attempts were made to revive this means of transport by introducing the tourist course “Jantar Express”, but due to financial unprofitability, the train stopped running. The rolling stock was transported to various parts of Poland, and the tracks were systematically stolen for scrap. In 1999, the narrow-gauge railways were officially liquidated.

This state of affairs was changed in 2003 by the Pomeranian Society of Iron Railway Enthusiasts, which led to the resumption of the Low Lands narrow-gauge railway. In 2006, the Low Lands Commuter Railway Association was established.

In the summer season, you can travel the route from Nowy Dwor Gdanski through Stegna to Sztutowo or Mikoszewo. The restored wagons are pulled by a historic steam locomotive, and traveling by such a train is a tourist attraction that attracts more and more people every year.