Europe's mountains may offer incredible views, but they are rarely an easy place to live. Golden eagles must soar high over the Alps to find food, while stags in the Scottish Highlands battle it out for valuable grazing land. Kidnapping is rife among Gibraltar’s Barbary macaques, and - in Norway's high plateaus - musk oxen can’t escape the harsh merciless winter. Faced with rugged landscapes and extreme weather conditions, Europe’s high-altitude animals must either adapt… or die trying.