Mountains: super tall, rocky landforms that rise high above the surrounding environment, much higher than hills. We might draw one as a single peak like Mount Fuji, or as a zig zag line of peaks representing a mountain range. Mount Everest (also known as Sagarmāthā and Chomolungma) is Earth’s highest peak above sea level, but it’s also surrounded by tall mountains in the Mahālangūr range. Do those count as some of the tallest on Earth, too?

Tom Scott asks “what counts as a mountain” on the 4,350 meter (14,271 foot) peak of Mount Evans in Colorado, North America’s 41st highest. Then he explains the answer… mostly.

Read more about topographical prominence and edge cases.

Next, more videos: Mount Everest, Mount Chimborazo, Mount Kenya, and flying high above the Rhone-Alpes in France.

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