Next Episode of Underground Worlds is
unknown.
For centuries, people have built mind-blowing structures underground. This series reveals incredible feats of human endeavour and reveals what people have built, how they built it and why.
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.
A mile underground in a former gold mine in South Dakota, now lies a world-leading scientific laboratory investigating neutrinos. A huge network of limestone tunnels under a quiet London suburb played a crucial role the subterfuge that protected the D-Day landings. And the pitch blackness of a former water cistern in Denmark with new and unexpected residents.
Exploring old tunnels in an abandoned tin mine beneath the moors of Cornwall. Plus, former Atlas missile siloes in Kansas and tunnels hiding under Valetta.
Exploring caves beneath Orvieto in Italy, originally built by the Etruscans long before the Roman Empire. Plus, a former limestone mine under Kansas City.
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