Home›Building and structure articles needing translation from Japanese Wikipedia›中山隧道🌐中文EnglishFrançais中文日本語EntityQ17226481· pop 5· linked from 3 articles中山隧道日本群馬縣的上越新幹線鐵路隧道Wikidata factsImageNakayama tunnel north entrance of the Joetsu Shinkansen B.jpgLength14857Show 4 more factsCommons categoryNakayama Tunnel (Joetsu Shinkansen)inception1982-03-17maximum gradient12date of official opening1982-01-01Sources (1)en.wikipedia.orgvia Wikidata · CC0On the mapAvailable in 4 languages中文日本語Malayvia Wikidata sitelinks · CC0ConnectionsShibukawaEntityJapanCountryCategoriesBuilding and structure articles needing translation from Japanese WikipediaJōetsu ShinkansenRailway tunnels in JapanShibukawa, GunmaTakasaki, GunmaTunnels completed in 1982Tunnels in Gunma Prefecture