 Mount Everest North Face as seen from the path to the base camp, Rongbuk Valley, Tibet (5,160 m). Image by Luca Galuzzi (Lucag), via Wikimedia Commons. Licensed CC BY-SA 2.5 |
MountainMountain Mountain Large natural elevation of the Earth's surface For other uses, see Mountain (disambiguation). A mountain is an elevated portion of the surface of a planet, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain is usually considered higher than a hill, typically rising 300 metres (980 ft) above the surrounding land. It may either have a limited summit area or be a smaller plateau with high elevation and steep sides. A few mountains are isolated summits, but most occur in mountain ranges.[1][page needed] Mount Everest, Earth's highest mountain Mountains are formed through tectonic forces, erosion, or volcanism,[1][page needed] which act on time scales of up to tens of millions of years.[2] Once mountain… (Source: Wikipedia)
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