TV SHOW

Secrets of the Underground

Science20172 Seasons

RealityDocumentary

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.

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HELIX
SHOW STATUSEnded
Released
Feb 14, 2017
Rated
G
Status
Ended
Original Language
English
Seasons
2
Episodes
16
Episode Runtime
60 min
Countries
United States of America
Languages
English

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