Underground Worlds

6:10 AM to 7:10 AM

Thursday 19 September

Medieval Maze of Secrets

Season 2 Episode 7 of 10

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

Underground Worlds airs on U&Yesterday HD at 6:10 AM, Thursday 19 September. (Subtitles, audio description.)

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