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16 Episodio
Secrets of the Underground - Season 1 Episode 7 Episodio 7
Rob investigates ancient ruins in New England that suggest Europeans arrived in the Americas almost 1,000 years before Columbus. Then, he heads to California where a dormant super-volcano may be showing new signs of life.
- Año: 2017
- País: United States of America
- Género: Reality, Documentary
- Estudio: Science
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