Pilatus cogwheel railway in Switzerland, the steepest of its kind in the world.
https://www.youtube.com/watch?v=alkiBVZ3SQE
Previously:
https://www.homemadetools.net/forum/...684#post132985
https://www.homemadetools.net/forum/...668#post163122
https://www.homemadetools.net/forum/...560#post158948
