Kashimagari Tunnel
Kashimagari Tunnel (Kashimagari tonneru) is a tunnel for pedestrians on Japan National Route 476 or former Hokuriku line located in Kashimagari, Tsuruga city, Fukui prefecture with length of 87 m and width of 3.9 m. It was built and completed in 1893 (during Meiji era), and it is a Japan tangible cultural property heritage site (of building registered in February 2016).
Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).