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Secrets of the Underground

Secrets of the Underground

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Secrets of the Underground

2017- 2017

2 Seasons

16 Episodes

4.3(3 votes)

Ended

Reality

Documentary

Overview

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.

Links & Resources

Social & External

Production Companies

Science Channel

Videos & Trailers

1 video

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