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  Stollen - The tunnel - YouTube

  https://www.youtube.com/watch?v=KfSpNVipZTo

  Movie about Swiss underground aircraft tunels - caverns

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  Lionel Charlet Swiss Air Force Axalp shooting demonstration - YouTube

  https://www.youtube.com/watch?v=2nax7-LrmL8

  Keine Beschreibung vorhanden.

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