Underground Worlds

Switzerland

Series 1 - Episode 3 Switzerland

Thursday 10pm - 11pm Yesterday
See Repeats
Wed 25 Dec, 7pm - 8pm Yesterday
HD SUB WIDE
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Summary

A look at some of Switzerland's 300,000 subterranean bunkers, built across history. Plus, the extraordinary creation of a Liverpool entrepreneur that's shrouded in mystery, and a network of man-made tunnels used by adventurous subterranean thrill-seekers deep beneath Slovenia's landscape.
Documentary