The Pen-y-Gwryd Hotel
Not a station, but a hotel - this small hotel at the foot of Snowdonia served as a base for many mountaineering training expeditions, including those which resulted in the first scalings of both and Everest and Kangchenjunga.
In the game, players place any unused track stations between Llanberis and this station - when excavating / building you can choose to do so in the direction of the hotel, or up the mountain as usual. The game's events do not excavate or build in this direction, though.
The card was part of a larger postcard given away in Lookout Games's magazine "Neues von Ausguck".