How the landscapes of America's three great mountain ranges - the Appalachians, the Rockies and the Sierra Nevada - challenged the westward push of the early pioneers. |
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Title: | Mountains | |
Air Date: | May 22, 2014 | |
Runtime: | 60 min | |
Genres: | History Travel Nature | |
grasshopper rex : As you can see from the rating here and on IMDb, far too many learned nothing from this em...