2 الموسم
16 حلقة
Secrets of the Underground - Season 2 Episode 1 الحلقة 1
A legendary train filled with stolen Nazi gold is said to be hidden in Poland. Using cutting-edge technology, Rob Nelson and Stefan Burns explore deep underneath the earth's surface and in abandoned Nazi tunnels in search for the infamous legend.
- عام: 2017
- بلد: United States of America
- النوع: Reality, Documentary
- ستوديو: Science
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