Mount Everest, Earth’s highest mountain, needs no introduction. At 29,032 feet, it sits not only at the top of the world, but also at the top of countless bucket lists. Our 60 Minutes crew starts the journey to Everest Base Camp by flying into one of the most dangerous at one of the most dangerous airports in the world. It will be a 10-day trek. An unusual challenge: dodging animals. When you hear the warning bells attached to the animals, you get out of the way fast. | 60 Minutes

Video shows a lone skier riding down Mount Etna in Italy while it erupted. The volcano, one of the world's most active, saw days of activity before the eruption. | CNN International

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