Buried Lab of the Black Hills

28th February 2022 45 mins Season 2 Episode 8

Exploring a former gold mine turned scientific laboratory in South Dakota. Plus, limestone tunnels in London and a former water cistern in Denmark.

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Season 2 · Episode 9

Subterranean Silo Survival

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.

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