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06.11 16:00
60 Min
Abandoned Engineering
Experts discuss the origins of a mysterious structure that sits on a small tidal island in Wales. Plus, old books offer the secrets to an abandoned structure in Croatia. (Nat Geographic HD)
07.11 16:00
60 Min
Abandoned Engineering
A real-life concrete jungle in America's 'Rust Belt', and an industrial facility that brought energy to a remote corner of the world. (Nat Geographic HD)