This is a sign from the metro alpin in Saas-Fee- the worlds highest (altitude wise) underground trainline. To get to the top of some of the ski runs you would ride a gondola and then change to the train which took you up most of the rest of the way!
We got a little bored of skiing/ snowboarding after a while so we spent one day sledging. It was a lot more fun than I thought it would be. There was a designated lift and a very long zig zag run specialy for the sledging. I was run off the trail by some young-uns but it was a blast!
Here is a view of our village from the window of our hotel. It was a car free village which made it much more enjoyable I think. The nicer hotels would run golf-cart like vehicles to take people fom the bus station and or car park to the hotel and lifts.
One of the mountains in Zermatt had an overground train instead of a gondola lift. There were some chair and pull lifts to get you the last bit up the mountian but the train did most of the work. In order to keep the trains from sliding on the tracks there is a third rail that is geared!