History
Ontakesan Station opened on 4 May 1923 as Ontakesan-mae on the Ikegami Electric Railway, in what is now Kitamine-chō, Ōta, Tokyo. It was shortened to Ontakesan on 1 June 1929. The line is now the Tōkyū Ikegami Line and the station carries the code IK10. It operates as a service-manager station monitored remotely from Kamata. Two ground-level side platforms (one section elevated) each have their own ticket gate with no in-station crossover. The name comes from a branch of Ontake Shrine, whose head shrine sits atop Mount Ontake on the Nagano–Gifu border.
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 takes its name from a local branch shrine of Ontake Shrine, and before passenger demand stabilised the surrounding district functioned as a stop-over town for pilgrims travelling to the Ontake faith's mountain shrines.