When did Horizon Season 20 Episode 9 air?
Horizon Season 20 Episode 9 aired on March 14, 1983.
Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 20 · Episode 9
Hard Rock
Mar 14, 1983·1h
The Horizon episode is about the Carsington Aqueduct Scheme in Derbyshire, England, and the massive excavation problems encountered during construction.
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Direct answers for episode-level questions and details.
How long is Horizon Season 20 Episode 9?
This episode runs for approximately 60 minutes.
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