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Steve Backshall's Extreme Mountain Challenge
Adventurer and wildlife expert Steve Backshall climbs some of Earth's most ancient mountains, the Gran Sabana Tepui mountain range.
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![](https://image.tmdb.org/t/p/w300/p6IHsi5GGuhk0GcmVkOLZRsGQrn.jpg)
Adventurer and wildlife expert Steve Backshall climbs some of Earth's most ancient mountains, the Gran Sabana Tepui mountain range.