The TsugaruStrait separates Hokkaido from Honshu, although the two islands are connected by the underwater railway Seikan Tunnel.
津轻海峡连接了北海道和本州岛,同时青函海底隧道也将两个岛屿紧密相连。
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Theregion's unpredictable geology and its volcanic rock prevented engineers from using boring machines, forcing them to blast and dig their way under the TsugaruStrait.