Starring
Adam Cho
Ratings per Episode
Votes per Episode
Secrets of the Underground Episode Ratings Heatmap
| Avg | E1 | E2 | E3 | E4 | E5 | E6 | E7 | E8 | ||
|---|---|---|---|---|---|---|---|---|---|---|
| S1 | 7.6 | 7.5 | 7.5 | 7.8 | 7.5 | 7.9 | 7.1 | 7.5 | 7.2 | |
| S2 | 6.9 | 7.9 | 7.8 | 6.8 | 6.8 | 6.3 | 6.0 | 5.7 | 5.8 |
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About
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.
All Seasons
▶
Season 12017
7.613895h 35m
▶
Season 22017
6.99985h 31m
Full Cast & Crew
Cast
Rob Nelson Self - Host
Stefan Burns Self - Host, Self - Geophysicist
Tim Bechtel Self - Geophysicist, Self
Adam Cho Roboticist, Self - Roboticist
Jared Peacock Self - Geophysicist, USGS, Self - Geophysicit
Frank Sohl Self - Geophysicist
Valerie Van Heest Self - Historian
Tracy Beach Self - Colorado Historian
Mark W. Holley Self - Underwater Archaelogist
John A. Martini Self - Alcatraz Historian
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