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Seikan Tunnel

technology Maturity 11-13

There is a long tunnel in Japan.

Seikan Tunnel profile diagram.svg
Seikan Tunnel profile diagram.svg
It goes under the sea. It connects two big islands. Trains go through it to help people move. It is very long and deep.
青函トンネル開通記念500円白銅貨.jpg
青函トンネル開通記念500円白銅貨.jpg
Have you ever been in a tunnel?

43 words
🖼️ Images & Media (4)
File:Location TsugaruPeninsulaJp.jpg
Location TsugaruPeninsulaJp.jpg
File:青函トンネル開通記念500円白銅貨.jpg
青函トンネル開通記念500円白銅貨.jpg
File:Seikan Tunnel 3d cross section 1a.svg
Seikan Tunnel 3d cross section 1a.svg
File:Seikan Tunnel profile diagram.svg
Seikan Tunnel profile diagram.svg
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📚 Content adapted from Wikipedia | Readability: FK 13.3 | Vital Level 5