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Related articles:
Tunnel
Channel Tunnel
Gotthard Base Tunnel
Shinkansen
Sapporo
Key terms: tunnel seikan rock train stations aomori railway shinkansen service traffic portion seikan tunnel hokkaido neck undersea surveys geology period island japanese transport consists travel connecting hakodate boring construction main tunnel initial sapporo longest increasing volcanic tertiary pilot tunnel completed conditions kilometres tsugaru strait service tunnel sedimentary cross section through the tunnel hokkaido shinkansen tunnel in the world Search external links cited by footnotes on Wikipedia page Seikan Tunnel: |
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