Ireland's Underground Alcatraz

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Underground Worlds
14th February 2022 45 mins Season 2 Episode 6

Exploring hidden defences that have kept Cork Harbour, in Ireland, safe for over 400 years. Plus, a former submarine base in the fjords of northern Norway.

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Season 2 · Episode 7

Medieval Maze of Secrets

Exploring long narrow tunnels beneath Exeter that were built in medieval times to protect the city. Plus, a marble quarry under the pine forests of Vermont.
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01 Chris Jarman profile Chris Jarmanas Self - Narrator
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