Funicular railway

A funicular, also known as a funicular railway, incline, inclined railway, inclined plane, or cliff railway, is a type of self-contained cable railway in which a cable attached to a pair of tram-like vehicles on rails moves them up and down a very steep slope, the ascending and descending vehicles counterbalancing each other.

The word is from the Latin funiculus, a diminutive of funis, "rope".