![Mountains (Full Episode) | Hostile Planet](https://i.ytimg.com/vi/NcRifDitRnU/sddefault.jpg)
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national geographic nat geo natgeo animals wildlife science explore discover survival nature documentary highest mountains highest mountains on Earth mountains snow leopards golden eagles mountain goats barnacle goslings gelada monkeys toughest extreme weather scarce food limited oxygen peaks new technology never-before-filmed animal behavior Hostile Planet extreme environments most extreme environments Mountains (Full Episode) Full Episode