Mount Everest

Mount Everest is the highest mountain on Earth measured by height above sea level, rising to roughly 8,849 metres in the Himalayas. It sits on the border between Nepal and the Tibet Autonomous Region of China. Known in Nepali as Sagarmatha and in Tibetan as Chomolungma, it is the most famous climbing objective in the world and a powerful symbol of human endurance.

Everest is part of the Himalayan range, which formed as the Indian tectonic plate collided with the Eurasian plate. That collision continues today, slowly pushing the mountains higher.

Geology and height

The summit is made of rock that once lay on the ocean floor, evidence of the immense forces that lifted the region. The agreed elevation is about 8,849 metres, a figure refined by surveys over time. Determining the exact height is complicated because the mountain moves slightly with tectonic activity and snow depth varies.

The Himalayas include many other peaks above 8,000 metres, but Everest stands highest by the sea-level measure. Some other mountains, measured from their base rather than from sea level, are taller in total relief, a frequent point of confusion.

Climate and altitude

At the summit, atmospheric pressure is about a third of that at sea level, so each breath delivers far less oxygen. Temperatures can drop well below freezing, and winds can be ferocious. The mountain creates its own extreme weather, and the climbing window is short, usually in the spring before the summer monsoon, with a smaller window in autumn.

The upper section above roughly 8,000 metres is often called the "death zone," where the human body cannot acclimatize and deteriorates over time. Climbers rely on acclimatization, supplemental oxygen and careful timing to survive there.

Climbing history

Early expeditions in the 1920s explored the mountain from the Tibetan side and reached great heights without summiting. In 1953, Edmund Hillary of New Zealand and Tenzing Norgay, a Sherpa from Nepal, became the first to reach the summit by a confirmed route. Their achievement was celebrated worldwide.

Since then, thousands of climbers have reached the top. Routes from Nepal and Tibet have been developed, camps established at increasing altitudes, and commercial expeditions have made the mountain accessible to experienced clients with support. The first winter ascent, by a Polish team, took place in 1980, and the first solo ascent without supplemental oxygen followed the same year.

Hazards and risks

Climbing Everest is dangerous. Avalanches, falls, ice collapse and exposure cause fatalities, and altitude sickness can be deadly. A 2015 earthquake triggered an avalanche that killed climbers at base camp. Bottlenecks near the summit, where climbers queue in the death zone, have contributed to deaths when weather windows close.

Sherpa guides play a central role, fixing ropes, carrying supplies and supporting clients. Their skill and risk are widely recognized as essential to most successful expeditions.

Environment and modern pressures

Heavy traffic has brought problems: litter, abandoned equipment, human waste and crowding. Clean-up efforts have removed tonnes of rubbish, and rules have been introduced to limit numbers and require climbers to bring back trash. Climate change is also affecting the mountain, thinning glaciers and melting snow, which makes routes less stable.

The mountain's cultural significance to local Sherpa and Tibetan communities remains important, and both respect for the peak and concern over commercialization are part of the modern debate.

Life on the mountain

The Himalayas around Everest support hardy plants and animals adapted to high altitude and cold, from alpine shrubs and mosses to birds such as the lammergeier and the Himalayan tahr, a wild goat. Species numbers and vegetation thin out sharply as elevation rises, and above a certain height the landscape becomes bare rock, snow and ice.

The Sherpa people of the Khumbu region have lived in the high valleys for centuries and are central to climbing and trekking culture. Their Buddhist traditions, monasteries and festivals are an important part of the region, and many climbers and trekkers pass through their villages on the approach to base camp.

Trekking and tourism

Beyond the summit, the Everest region is a major destination for trekkers who walk to viewpoints and base camp without attempting the peak. This tourism supports local businesses and employment, but it also brings environmental pressure, including trail erosion, waste and demand on fragile infrastructure. Balancing the economic benefits with protection of the environment and local culture is an ongoing challenge.

Permits, fees and regulations are used to manage numbers and fund conservation, though enforcement and fairness are frequently debated.

Common misconceptions

Everest is the highest above sea level, but not the tallest mountain when measured from base to peak; that distinction goes to Mauna Kea in Hawaii. Reaching the summit does not simply require fitness; it requires mountaineering skill, money, logistics and luck with weather. And despite its fame, Everest is only one of many formidable Himalayan peaks.

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