Inch Mountain Counterbalance Railway

The Inch Mountain Counterbalance Railway was a funicular railway built to assist the train in climbing a steep path through Inchnacardoch Forest.

Real World Equivalent
A funicular railway consists of two passenger vehicles attached by a strong cable, looped over a pully at the top of a slope. The weight of the descending vehicle is used to move the ascending vehicle, with each counterbalancing the other.

Funicular railways can be found all over the world. There are 42 in the United Kingdom, including the Cairngorm Mountain Railway in Aviemore, which the highest railway in the country; the top station is 1097 metres (3599 feet) above sea level.