Modern Marvels Season 17 Episode 7 Secret Underground 2010
7.88/10 by 25 users
Just below the surface, there's a whole different America hidden from public view. Take a revealing look at the America under our feet, from secret military installations, and experimental farms to tunnel networks and neutron lasers.
- Released: 2010-12-10
- Runtime: 44 minutes
- Genre: Documentary
- Stars:
- Director:
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1. Mega Stores 2010-10-29
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2. Supersized Food 2010-11-05
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3. Coin Operated II 2010-11-12
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4. Engineering Disasters 22 2010-11-19
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6. Built to Last 2010-12-03
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7. Secret Underground 2010-12-10
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8. Made in the USA 2010-12-17
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9. Driver's Seat 2010-12-21
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11. Packaging 2011-01-14
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12. Grease 2011-01-21
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13. Ropes & Chains 2011-01-28
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14. American Trucking 2011-02-04
