![Horizon](https://image.tmdb.org/t/p/w342/uX8pic7asQBdnwMB9QjPvTsn1Dw.jpg)
60 Season
1161 Episode
Horizon - Season 16 Episode 15 Tracks on the Oregon Trail
Horizon investigates the environmental protection program going on in the state of Oregon in the USA. Oregon is the first state to clean up it's environment.
- Year: 2022
- Country: United Kingdom
- Genre: Documentary
- Studio: BBC Two
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- Cast: