Transport・Hokkaido
Seikan TunnelSeikan Tunnel
Also known as: 青函トンネル
A railway tunnel about 53.85 km long connecting Hokkaido (the south) and Honshu (Aomori) beneath the Tsugaru Strait. It opened in 1988 and now also carries the Hokkaido Shinkansen.
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Featured in the Hokkaido quiz (≈2 questions touch on this).
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