Shimizu Tunnel
The 101st longest tunnel in the world
Shimizu Tunnel (Shimizu-tonneru) is a railroad tunnel in Gunma and Niigata Prefectures of Japan, operated by JR East Jōetsu Line. The name originates from the Shimizu mountain pass nearby. There are three tunnels near each other, which are the Shimizu Tunnel, the Shin-Shimizu Tunnel, and the Daishimizu Tunnel.
Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).