I had a chance to visit Hokkaido this summer, the northernmost of Japan’s four main islands. A trip to Hokkaido used to involve flying, or a very slow journey by boat, but a new extension of the shinkansen network to Shin-Hakodate station opened in March 2016. We were now able to go there by train thanks to the Seikan Tunnel — a 53km long underground section, 23km of which sinks 100 metres below...







