Underground Worlds

7:10 AM to 8:00 AM
Thursday 19 September
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Buried Lab of the Black Hills

Season 2 Episode 8 of 10

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

Underground Worlds airs on U&Yesterday at 7:10 AM, Thursday 19 September. (Subtitles, audio description.)
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