the railway used steam locomotives when it opened. the two original locomotives were made by fletcher, jennings &amp; co. of whitehaven in cumbria. both of them are still used today but many of the parts inside and outside have been replaced. talyllyn has a rare gauge. this is thought to match the gauge at corris railway. the locomotives at talyllyn might be the oldest of their kind for making sure they fit that type of gauge. the locomotives, "talyllyn" and "dolgoch" used to carry slate from the quarry at tywyn. it also carried other things. trains that carried people, called passenger trains, traveled between abergynolwyn, dolgoch and pendre. men who worked on the quarries also traveled on trains, despite those trains not being able to be used by the public. those trains traveled from abergynolwyn to alltwyllt and into nant gwernol.