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Phase 1: Shin Aomori Stn - Shin Hakodate Stn. (150km. under construction) via Seikan Undersea Tunnel Line (82km, completed. world's longest chunnel tunnel), due to open before 2015. Operation speed is over 360km/h.
Phase 2: Shin Hakodate Stn.- Sapporo Stn.(212km). Three-fourths of Hokkaido Shinkansen Line will be tunnel sections.