Don explores top-secret military and government tunnels and looks into classified technology that could be used to build entire cities... right under our feet.
| Title | Cities of the Underworld - Season 4 Episode 2 America's Military Underground |
|---|---|
| Year | 2021 |
| Genre | Documentary |
| Country | Italy, United Kingdom, United States of America |
| Studio | History, Planète+ A&E |
| Cast | Don Wildman |
| Crew | |
| Alternative Titles | Dans le secret des villes, Unter den Metropolen, Ciudades bajo tierra, Ypogeioi kosmoi, Világ a város alatt |
| Keyword | |
| First Air Date | Mar 02, 2007 |
| Last Air date | Oct 26, 2021 |
| Season | 4 Season |
| Episode | 48 Episode |
| Runtime | 43:14 minutes |
| Quality | HD |
| IMDb: | 8.00/ 10 by 11.00 users |
| Popularity | 3.191 |
| Language | English |
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