History
The station opened on 1 August 1959 as Kawane-Nagashima Station in what is now Kawanehon, Shizuoka Prefecture, and was built primarily to support the construction of the nearby Nagashima Dam on the Ōi River. When the dam was completed in October 1990 it required a rerouting of the Ikawa Line, and on 2 October 1990 the station was renamed Sessokyō-Onsen in an attempt to attract visitors to the nearby hot springs resort of the same name. The local hamlet of Nagashima itself was relocated uphill from the valley floor at the same time because the original village would have been flooded by the reservoir. The station has a single island platform serving two tracks and is unattended.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-18.
Notes
Most residents of the relocated Nagashima hamlet share the surname Nagashima (長嶋, with the variant kanji 嶋) — not the 島 form that appears in the hamlet name itself.