Smallest Subway in Unrecognized State Abkhazia

New Athos Cave Railway, also knowns as New Athos Subway, is an underground electric railroad serving the New Athos Cave, in the town of New Athos, Abkhazia. Opened in 1975, it has a length of 1.3 kilometres and three stations, two of the trains are Soviet built tourist trains and the third is a newly built Latvian Ep 563. The line is a single track and electrified narrow gauge railway.