History
Tosa-Iwahara Station opened on 28 November 1935 when the then-Kōchi Line was extended north from Toyonaga to Minawa and the through-route was renamed the Dosan Line. Japanese Government Railways operated the station, with control passing to Japanese National Railways after the war. The station was made unstaffed on 1 October 1970 and converted to simple consignment. On 26 December 1986, Ōtoyo Agricultural Cooperative paid the entire 15 million yen cost of a new combined station-cum-cooperative office building. With the privatisation of JNR on 1 April 1987, operation passed to JR Shikoku, which has since assigned the station the number D28.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-18.
Notes
Tosa-Iwahara is the northernmost station in Kōchi Prefecture, and between 1974 and 1992 — the gap between the closure of the Tosa Electric Railway's Aki Line and the opening of the Asa Seaside Railway's Asatō Line — it was also the easternmost.