Japan’s 53.85km Seikan railway tunnel passes beneath the Tsugaru Strait and connects the Aomori Prefecture on Honshu Island and the Hokkaido Island. The Seikan tunnel connects the Honshu and the ...

The Seikan Tunnel in Japan is the longest tunnel with an underwater section in the world, measuring a total of 53.85 kilometers (33.4 miles) in length, around 23.3 kilometers (14.5 miles) of which ...

The Seikan Tunnel in Japan is an extraordinary underwater tunnel. It cost approximately £5.6 billion to construct and links Japan to its northern islands, specifically connecting the islands of H ...

Seikan Tunnel, Japan (Hokkaido Railway Company) Until the Gotthard Base Tunnel is completed in 2016, the Seikan Tunnel holds the title of the longest operational railway tunnel in the world.

The ride is apparently meant to represent a journey to the core of the Earth. The Seikan is a railway tunnel in Japan, but what makes it unique is the fact that a 23-kilometer (14.2 miles ...

Here's what it's like to enter Japan's Seikan Tunnel, which connects two islands —Hokkaido and Honshu—and is one of the world's longest underwater tunnels. The Seikan expanse is close to 34 ...

The new tunnel through the Alps is 35.5 miles long, exceeding by 2 miles the current record-holder, Japan’s Seikan Tunnel. Some sections lie a record 1.4 miles beneath the mountain's peak.

10 Seikan Tunnel (Japan) The Seikan is a railway tunnel in Japan, but what makes it unique is the fact that a 23-kilometer (14.2 miles) stretch of the tunnel is 140 meters (460 feet) below sea level.

Here's what it's like to enter Japan's Seikan Tunnel, which connects two islands —Hokkaido and Honshu—and is one of the world's longest underwater tunnels. The Seikan expanse is close to 34 ...

The ride is apparently meant to represent a journey to the core of the Earth. The Seikan is a railway tunnel in Japan, but what makes it unique is the fact that a 23-kilometer (14.2 miles ...