2 Temporada
20 Episodio
Underground Marvels - Season 2 Episode 1 Episodio 1
The top-secret construction of a massive nuclear bunker remained concealed under a palatial West Virginia hotel for decades, and now, experts reveal how this vast subterranean structure was one of the most closely guarded Cold War secrets in US history.
- Año: 2021
- País: United Kingdom, United States of America
- Género: Documentary
- Estudio: Science, U&Yesterday
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