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Kanmon Straits 1

Kanmon Straits

The Kanmon Strait is a strait full of historical and cultural significance that connects Fukuoka and Yamaguchi prefectures. It is the world's first tunnel that can be walked under the sea, providing a rich sightseeing experience. Inside the tunnel, visitors can admire patterns symbolizing the ocean and the cultures of both places, and experience the line that crosses the border between Fukuoka and Yamaguchi prefectures.

  • Highlights

    Japan Heritage、Kanmon Bridge、Undersea walkway

  • Suggested Duration

    Half day

  • Location

    Yamaguchi・Fukuoka border

  • Getting There

    Mojiko Stn: 3-min walk

Top things to do in Kanmon Straits

Gourmet Food

Gourmet Food

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Kanmon Straits travel FAQs and useful info

How deep is the Kanmon Strait?

The Kanmon Strait is approximately 12 meters deep. Countless generations of pilots and captains have braved its treacherous reefs and fierce currents of up to 11 knots (20.3 km/h).

Where is the Kanmon Strait located?

The Kanmon Strait is a narrow channel of water that separates the Japanese islands of Honshu and Kyushu. It connects the Sea of Japan and the Inland Sea, playing a vital role in maritime transportation.

What does 'Kanmon' mean in Japanese?

In Japanese, 'Kanmon' (関門) can mean 'barrier'.

What is Shimonoseki famous for regarding the Kanmon Straits?

Shimonoseki, located by the Kanmon Straits, is famous for fugu (pufferfish). Visitors can also find a variety of locally-caught seafood at the Karato Fish Market.

What are the key navigational challenges of the Kanmon Straits?

The Kanmon Straits present significant navigational challenges due to treacherous reefs and fierce currents that can reach up to 11 knots (20.3 km/h). At its narrowest point, the navigable width is only half a kilometer.