Sasago Tunnel
The Sasago Tunnel (Sasago Tonneru) is a twin-bore motorway tunnel on the Chūō Expressway located on the border of the cities of Kōshū and Ōtsuki in Yamanashi Prefecture, Japan. It is located about 80 kilometres (50 mi) west of the capital Tokyo. It was built in 1977.
Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).