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France
Pays de la Loire

submarine bunker from world war 2

Discover
Places to see
France
Pays de la Loire

submarine bunker from world war 2

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submarine bunker from world war 2

Recommended by 23 mountain bikers out of 24

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    Best Mountain Biking Routes to submarine bunker from world war 2

    4.9

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    1. Interesting salt fields – Baie du Scall loop from Saint-Nazaire

    75.8km

    04:08

    320m

    320m

    Intermediate mountain bike ride. Good fitness required. Suitable for all skill levels.

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    Intermediate

    Intermediate mountain bike ride. Good fitness required. Suitable for all skill levels.

    Intermediate

    Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

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    Tips

    September 5, 2025

    The Saint-Nazaire U-boat bunker is one of five German U-boat bases built on the French Atlantic coast during World War II. The 301-meter-long bunker was built in just 16 months in 1941/42 using almost half a million cubic meters of concrete. Several hundred men were stationed here until May 1945; offices, workshops, and a medical center were housed under the roof, which was up to 9.60 meters thick. It was built on the site of the former overseas port from which steamers departed for Central America.

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      Elevation 10 m

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      Sunday 2 November

      15°C

      13°C

      70 %

      If you start your activity now...

      Max wind speed: 31.0 km/h

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      Location: Pays de la Loire, France

      Other Popular Places to Check Out

      Monument to the American Expeditionary Force (Sammy), Saint-Nazaire

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