Underground Marvels - Season 1 - Eps 1: Secrets of the Rock
A hidden, subterranean city built within the Rock of Gibraltar was an immense fortress to control the seas during World War II, and new discoveries reveal the secrets of a long-lost chamber with evidence of high-stakes espionage.
About Underground Marvels
Title: Underground Marvels
First Air Date: 2019-10-17
Last Air Date: 2021-10-07
Status: Returning Series
Rating: 6/10 (from 1 votes)
Language: EN
Seasons: 2
Total Episodes: 20
Network: Science U&Yesterday
Genres: Documentary
Production Companies: Phoenix Television, TCB Media Rights
Synopsis
Historians, engineers, and experts take a look at the underground structures, systems, and phenomena that exist beneath our feet.
