Cavan & Leitrim Railway

The Cavan and Leitrim Railway was a 3 ft narrow-gauge railway in the counties of Leitrim and Cavan in northwest Ireland, which ran from 1887 until 1959.

Unusually for Ireland, this 3 ft narrow gauge line survived on coal traffic, from the mine at Arigna, although the original main line was constructed principally for traffic in cattle. It outlived most of the other Irish narrow-gauge lines, giving a further lease of life to some of their redundant engines.

Source: Wikipedia