Seikan Tunnel Pilot Shaft Breaks Through, Honshū-Hokkaidō Link January 27, 1983
The pilot shaft of the Seikan Tunnel, the world's longest sub-aqueous tunnel (53.85 km) between the Japanese islands of Honshū and Hokkaidō, breaks through. Date: January 27, 1983 Read more on Wikipedia → 📅 Other events on January 27 📅 Events on this day in 1983 📅 On This Day (Today)