Secrets of the Underground
TV Show| Title | Secrets of the Underground |
| User score | 4.3 |
| Release date | Feb 14, 2017 |
| Release date of last episode | Dec 16, 2017 |
| Genre | Reality, Documentary |
| Production country | United States of America |
| Production companies | Science Channel |
| Series status | Returning series |
| Seasons count | 2 (List of episodes) |
| Episodes count | 16 |
| Run time | 60 min. |
A search for an underground escape route said to have been used by Al Capone. Also: who or what built earthen mounds in Washington state.
Latest episodes
List of episodesS2.E8 ∙ Quest for the Gold Rush Fortune
Dec 16, 2017
S2.E7 ∙ Lost Pirate City Treasure
Dec 9, 2017
S2.E6 ∙ Mystery of the Ice Cave
Dec 2, 2017
S2.E5 ∙ Atlantis in America
Nov 25, 2017
S2.E4 ∙ Doomsday Volcano of the Gods
Nov 18, 2017
S2.E3 ∙ Tesla's Final Secrets
Nov 11, 2017
S2.E2 ∙ King Solomon's Treasures
Nov 4, 2017
S2.E1 ∙ Legend of the Nazi Gold
Oct 28, 2017
S1.E8 ∙ American Stonehenge
Apr 4, 2017
S1.E7 ∙ Secret History of the New World
Mar 28, 2017
S1.E6 ∙ California's Hidden Doomsday
Mar 21, 2017
S1.E5 ∙ Great Lakes Bermuda Triangle
Mar 14, 2017
S1.E4 ∙ Rocky Mountain Monsters
Mar 7, 2017
S1.E3 ∙ America's Buried Massacre
Feb 28, 2017
S1.E2 ∙ Mystery of the Serpent Mound
Feb 21, 2017
S1.E1 ∙ Capone's Escape Tunnels
Feb 14, 2017
Videos
Secrets of the Underground | NEW SERIES | Premieres Tue Feb 14
Jan 27, 2017
