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An abandoned concrete wall... five strange deserted structures. A lost escape route from nuclear Armageddon... A submerged link to D-day... Once they were at the cutting edge of design and construction, now they lie disused, contaminated and dangerous. But who built them? And why were they abandoned?
First Air Date : Feb 18, 2017
Last Air date : Dec 11, 2023
Episode : 117 Episode
Season : 12 Season
Runtime: 44:14 minutes
Studio: Yesterday
Country: United Kingdom
Cast: Tom Ward
Crew:
