Available on Disney+
S1, E2: A look at the huge concrete submarine pens built by the Nazis to protect their U-Boats from allied bombs. Such was their size and strength, they still survive today.
Documentary · 24 Jul 2013 · 41 min
Information
- Released
- 2013
- Run Time
- 41 min
- © 2013 Darlow Smithsonian Productions Limited
Languages
- Original Audio
- English (United Kingdom), English
- Audio
- English (Dolby 5.1), and 9 more...
- Subtitles
- Chinese (Hong Kong) , and 22 more...