Ishikawa Tunnel
The 4th longest tunnel in the world
The Ishikawa Tunnel (Ishikawa Tonneru) is part of Japan National Route 329 in Uruma, Okinawa. It cuts through the cliffs south of Ishikawa to connect the Ishikawa By-pass to Route 329 proper. The by-pass, tunnel, and bridge were built in the 1990s.
Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).