The Sakhalin–Hokkaido Tunnel is a proposed tunnel (or potentially bridge) connection to link the Russian island of Sakhalin with the Japanese island of Hokkaido through the Russia-Japan border. Cost estimates by Russia in the year 2000 put the project at $50 billion and that would span across the Soya strait for 45 kilometres (28 miles).
The Sakhalin–Hokkaido Tunnel is a proposed tunnel (or potentially bridge) connection to link the Russian island of Sakhalin with the Japanese island of Hokkaido through the Russia-Japan border. Cost estimates by Russia in the year 2000 put the project at $50 billion and that would span across the Soya strait for 45 kilometres (28 miles).
Source: Wikipedia "Sakhalin–Hokkaido Tunnel" · CC BY-SA 4.0
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