History
Unazuki Onsen Station opened on 21 November 1923 as Momohara Station, the terminus of a new Kurobe Railway line built by the subsidiary of Toyo Aluminium to serve hydropower construction in the Kurobe gorge. It was renamed Unazuki Station in March 1924. In January 1943 wartime consolidation merged the regional operators into the new Toyama Chihō Railway. A 1946 fire in the hot-spring district destroyed the original station building. The line was reclassified as part of the Main Line in 1969, freight was withdrawn the same year, and the current designation Unazuki Onsen Station was adopted on 1 August 1971. The present three-storey building dates from 1982.
History summarized from Japanese & English Wikipedia · last reviewed 2026-06-09.
Where the English and Japanese sources differ, this account follows the Japanese source.
Notes
The station shares its name in Japanese with the nearby Kurobe Gorge Railway terminus 250 m to the south, so the Toyama Chihō Railway posts a sign at the entrance explaining that this is not the boarding point for the gorge-line trolley trains.