Underground Worlds
Subterranean Silo Survival
Season 2 Episode 9 of 10
Exploring old tunnels in an abandoned tin mine beneath the moors of Cornwall. Plus, former Atlas missile siloes in Kansas and tunnels hiding under Valetta
Underground Worlds airs on U&Yesterday +1 at 7:10 AM, Friday 20 September. (Subtitles, audio description.)
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Documentary