The is a railway line in Japan, operated by the East Japan Railway Company (JR East). It connects Kogota Station in Misato, Miyagi Prefecture to Shinjà  Station in Shinjà Â, Yamagata Prefecture, acting as a connector between the Tà Âhoku Main Line, à Âu Main Line, and Tà Âhoku Shinkansen in the southern Tà Âhoku region, and provides access to north-western Miyagi Prefecture and north-eastern Yamagata Prefecture.
Its name refers to the ancient provinces of Mutsu (é¸奥) and Dewa (åº羽) (or alternatively, the Meiji period provinces of Rikuzen (é¸åÂÂ) and Uzen (ç¾½åÂÂ)), which the line connects.
Due to heavy rainfall in July 2024, all services on the section of the line between and the terminus Shinjà  are currently suspended.
The Kogota - Naruko-Onsen section was opened in stages between 1913 and 1915, with the Shinjo - Naruko-Onsen section opened in stages between 1915 and 1917.
CTC signalling was commissioned in 1983, and freight services ceased in 1987.
The line celebrated its 100th anniversary on November 3, 2017, with a special train hauled by JNR Class DE10 locomotives.
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