in 1928, the Kings Bay Mining Company built a narrow-gauge railway to help carry coal from the mine’s entrance to and airship hangar site, in the north of Svalbard, a group of Norwegian islands halfway to the North Pole, in order to supply the dirigible exploring the arctic

 

https://www.bbc.com/future/article/20180911-the-giant-hangar-built-for-an-arctic-airship