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Mount Everest
Nepali: सगरमाथा
Standard Tibetan: ཇོ་མོ་གླང་མ
Highest point
Elevation
Ranked 1st
Prominence Ranked 1st
(Special definition for Everest)
Isolation n/a
Listing Eight-thousander
Seven Summits
Country high point (Nepal and China)
List of mountains in Nepal
List of mountains in China
Ultra
World's most isolated peaks 1st
Naming
Etymology George Everest
English translation
  • Nepali: Skyhead
  • Tibetian: Holy Mother
Geography
Location Solukhumbu District, Koshi Province, Nepal;
Tingri County, Xigazê, Tibet Autonomous Region, China
Country
Parent range Mahalangur Himal
Climbing
First ascent 29 May 1953
Edmund Hillary and Tenzing Norgay
Ranked 1st
Normal route Southeast Ridge (Nepal)
UNESCO World Heritage Site
Part of Sagarmatha National Park (Nepal)
Criteria Natural: vii
Inscription 1979 (3rd Session)
Everest North Face toward Base Camp Tibet Luca Galuzzi 2006
North Face of Everest as seen from the path to North Base Camp
Mount Everest morning
View from the south (Nepal) shows Everest rising behind the ridge connecting Nuptse and Lhotse; in the foreground are Thamserku, Kangtega, and Ama Dablam

Mount Everest is the tallest mountain on Earth. Its peak reaches higher than any other point above sea level. It is located in the Himalayas, a huge mountain range. The summit of Everest sits right on the border between Nepal and China. In Nepal, it is called Sagarmāthā, and in Tibet (China), it is known as Qomolangma. In 2020, experts from Nepal and China measured its height together. They found it to be 8,848.86 m (29,031 ft 8+12 in) tall.

Many brave climbers try to reach Everest's summit. There are two main paths to the top. One starts from the southeast in Nepal, and the other from the north in China. Climbing Everest is very challenging. Dangers include altitude sickness, extreme weather, and strong winds. Climbers also face risks from avalanches and the Khumbu Icefall. As of May 2024, many people have lost their lives on Everest. The mountain is a powerful force of nature.

Climbers usually start their journey from base camps. These camps are already very high, above 5,000 m (16,404 ft). To climb the entire height of Everest from sea level would be a huge task. Most climbers fly to nearby towns and then trek to the base camps. For example, on the Nepalese side, climbers often fly to Kathmandu and then to Lukla. From Lukla, they hike to the South Base Camp. This trek adds about 6,000 m (20,000 ft) to their climb.

The first people to try climbing Everest were British mountaineers. Nepal did not allow foreigners in at that time. So, the British tried the North Ridge route from Tibet. In 1922, an expedition climbed above 8,000 m (26,247 ft) for the first time. In 1953, Tenzing Norgay and Edmund Hillary made the first confirmed climb to the summit. They used the Southeast Ridge route. Later, in 1960, a Chinese team made the first reported climb from the North Ridge.

Understanding Mount Everest's Names

"Papers relating to the Himalaya and Mount Everest" in Proceedings of the Royal Geographical Society of London, Vol. I (1857), p. 346
The name "Mount Everest" was first suggested in this 1856 speech. It was later published in 1857, confirming the mountain as the world's highest.

Mount Everest has different names in local languages. In Nepali and Sanskrit, it is called Sagarmāthā. This name means "the head in the great blue sky." It comes from words meaning "sky" and "head."

The Tibetan name for Everest is Qomolangma. This means "holy mother." This name was first written down in Chinese in 1721. It appeared in the West in 1733 on a French map. You might also see it spelled Chomolungma.

The official Chinese name is Zhūmùlǎngmǎ Fēng. This is how the Tibetan name sounds in Mandarin. Other Chinese names were used before, but in 1952, the Chinese government decided on this one.

The name "Mount Everest" comes from Sir George Everest. He was a British surveyor. In 1856, a British survey confirmed that this mountain was the world's highest. The surveyor, Andrew Scott Waugh, decided to name it after his former boss, Sir George Everest. Sir George himself did not want the mountain named after him. He felt it would be hard for local people to write or say. But his suggestion was not taken, and the name "Mount Everest" became official in 1865.

Other Names for Everest

Gaurisankar 1890
1890 drawing showing the Himalayas, with Gaurisankar (Mount Everest) in the distance.
  • "Peak XV" was a temporary name given by British surveyors.
  • "Deodungha" was an old name used in Darjeeling.
  • "Gaurishankar" was sometimes mistakenly used for Everest. Today, it refers to a different mountain about 30 miles (48 kilometres) away.

Measuring Mount Everest's Height

MountEverestRelief
A relief map of Mount Everest.
Tibetan Plateau and Mount Everest
Views showing the full height of Mount Everest.

In 1802, the British began a huge project called the Great Trigonometrical Survey of India. They wanted to map and measure the highest mountains. Survey teams used giant tools called theodolites. These tools were very heavy and needed many people to carry them. They aimed to measure heights as accurately as possible.

Nepal did not allow the British to enter their country. So, the British had to observe the mountains from a region south of Nepal called Terai. Conditions there were tough, with heavy rains and malaria. Despite this, in 1847, they started detailed observations of the Himalayan peaks. They made measurements from as far as 240 km (150 mi) away.

In 1849, a surveyor named James Nicolson took many measurements. His early data suggested that a peak, then called "Peak XV," was higher than any other. But he had to go home due to illness before finishing his calculations.

In 1852, an Indian mathematician, Radhanath Sikdar, used these measurements. He was the first to figure out that Peak XV was the world's highest mountain. The official announcement was delayed for years. This was because the calculations needed to be checked many times. Finally, in 1856, it was announced that Peak XV was 8,840 m (29,002 ft) high. It was declared "most probably the highest in the world."

Modern Surveys and Height Updates

CH-NP 79-80 Bdy Map50
Map 50 from the 1979–80 Nepal-China border survey. It shows the boundary line passing through Everest's summit.
ISS004E8852 everest
The Kangshung Face (east side) of Everest, seen from space.

After the 19th century, new technologies helped measure Everest even more precisely. From 1952 to 1954, the Survey of India measured Everest's height as 8,847.73 m (29,028 ft). In 1975, a Chinese measurement confirmed it as 8,848.13 m (29,029.30 ft). Both measurements included the snow cap, not just the rock.

In 1999, an American team used GPS to measure the highest bedrock. They found it to be 8,850 m (29,035 ft). In 2005, Chinese scientists announced the rock height as 8,844.43 m (29,017.16 ft). They said this was the most accurate measurement yet. There was a discussion between China and Nepal about whether to use the rock height or the snow height. In 2010, both countries agreed on 8,848 m (29,029 ft) as the official height. Nepal also recognized China's rock height measurement.

On December 8, 2020, Nepal and China jointly announced a new official height: 8,848.86 metres (29,031.7 ft). Scientists believe that the movement of Earth's plate tectonics is still making Everest grow taller. It is thought to be rising by about 4 mm (0.16 in) each year.

Comparing Everest to Other Tall Mountains

Everest's summit is the highest point on Earth above sea level. But other mountains are sometimes called "tallest" in different ways.

  • Mauna Kea in Hawaii is tallest when measured from its base. It rises over 10,200 m (33,464.6 ft) from the ocean floor. However, only 4,205 m (13,796 ft) of it is above sea level.
  • Denali in Alaska is also taller than Everest from base to summit. Denali's peak is 6,190 m (20,308 ft) above sea level. But its base starts much lower, making its total height from base to summit around 5,600 m (18,400 ft). Everest's height from its base is between 3,650 to 4,650 m (11,980 to 15,260 ft).
  • The summit of Chimborazo in Ecuador is the farthest point from Earth's center. This is because Earth bulges at the equator. Chimborazo is 2,168 m (7,113 ft) farther from the center than Everest. Even though Everest is much higher above sea level.

Everest's Surroundings on Maps

3D view of Mount Everest and the land around it.

Many other very high mountains are close to Mount Everest. These include Lhotse, Nuptse, Changtse, and Khumbutse. On Everest's southwest side, there is a huge icefall and glacier. This area is a big challenge for climbers.

Chomo Lonzo Makalu Everest Tibetan Plateau Rong River (Tibet) Changtse Rongbuk Glacier North Face (Everest) East Rongbuk Glacier North Col north ridge route Lhotse Nuptse South Col route Gyachung Kang Cho Oyu Image:Himalaya annotated.jpgHimalaya annotated.jpg
The southern and northern climbing routes, seen from the International Space Station. (The names on the photo are links to more information.)

Mount Everest's Geology: How it Formed

Mount Everest is made of different types of rocks. Geologists have divided these rocks into three main layers. These layers were pushed over each other long ago. From the top of Everest to its base, these layers are called the Qomolangma Formation, the North Col Formation, and the Rongbuk Formation.

The very top layer, the Qomolangma Formation, goes from the summit down to about 8,600 m (28,200 ft). It is mostly made of grey or white Ordovician limestone. Scientists have found tiny pieces of ancient sea creatures, like trilobites and crinoids, in this limestone. This tells us that these rocks were once at the bottom of a shallow sea!

The middle layer, the North Col Formation, makes up most of Mount Everest. It is found between 7,000 and 8,600 m (23,000 and 28,200 ft). This layer includes a distinctive yellowish-brown rock called the Yellow Band. This layer also contains signs of ancient sea life.

The lowest layer, the Rongbuk Formation, forms the base of Mount Everest, below 7,000 m (23,000 ft). It has very old, strong rocks like schist and gneiss. These rocks were formed deep inside the Earth under great heat and pressure.

Mount Everest's rocks were once marine sediments. They formed on the continental shelf of ancient India. Millions of years ago, the Indian Plate crashed into the Eurasian Plate. This huge collision pushed these rocks up, forming the mighty Himalayas. Everest is still slowly rising today.

Everest as a Geological Heritage Site

In October 2022, the International Union of Geological Sciences (IUGS) recognized the Ordovician Rocks of Mount Everest. They included it in a list of 100 important geological heritage sites worldwide. This is because Everest's rocks are the highest on the planet and contain fossils from ancient seas. It shows how much the Earth has changed over millions of years.

Mount Everest with snow melted, showing its upper rock layers in bands.

Flora and Fauna: Life on Everest

Yak at third lake in Gokyo
A yak at about 4,790 m (15,720 ft).

Life is tough on Mount Everest due to the extreme cold and high altitude. But some plants and animals have adapted to this harsh environment.

A type of moss grows at 6,480 metres (21,260 ft) on Everest. This might be the highest altitude plant species known! Another plant, called Arenaria, is a cushion plant that grows below 5,500 metres (18,000 ft). Recent studies show that plants are actually growing in more areas around Everest. This is happening in places that used to be bare.

Tiny black jumping spiders of the genus Euophrys have been found as high as 6,700 metres (22,000 ft). They might be the highest non-microscopic creatures living permanently on Earth. They may eat insects that are blown up the mountain by the wind. Even smaller life forms, like microbes, likely live at even higher altitudes.

Birds also fly high around Everest. The bar-headed goose migrates over the Himalayas. They have been seen flying at the mountain's highest altitudes. In 1953, a climber reported seeing them flying over Everest's summit. Other birds like the chough and yellow-billed chough have been spotted very high up, around 7,900 m (25,919 ft).

Yaks are very important animals in the Everest region. They are often used to carry heavy gear for climbing expeditions. Yaks can carry about 220 lb (100 kg). They have thick fur and large lungs, which help them in the cold, thin air. Other animals in the area include the Himalayan tahr, a type of wild goat. These are sometimes hunted by the elusive snow leopard. The Himalayan black bear lives up to about 4,300 metres (14,000 ft). The cute red panda also calls this region home.

Protecting Everest's Environment

Both Nepal and China work to protect the natural beauty and wildlife of Mount Everest. On the Nepalese side, Everest is part of Sagarmatha National Park. On the Chinese side, it is protected as part of the Qomolangma National Nature Reserve. These parks help keep the mountain and its unique ecosystem safe.

Mount Everest's Climate and Weather

Mount Everest has an ice cap climate. This means it is freezing cold all year round. Even in the warmest months, the average temperature is well below zero.

Climate data for Mount Everest (Summit)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean minimum °C (°F) −36
(−33)
−35
(−31)
−32
(−26)
−31
(−24)
−25
(−13)
−20
(−4)
−18
(0)
−18
(0)
−21
(−6)
−27
(−17)
−30
(−22)
−34
(−29)
−36
(−33)

Climate Change and Everest

The Khumbu Glacier, near the Everest base camp in Nepal, is shrinking quickly. This is due to climate change. The glacier is becoming unstable, which makes it unsafe for climbers. Nepal's government has considered moving the base camp to a lower, safer spot. This would mean a longer journey for climbers to reach the higher camps. However, this plan has been put on hold due to concerns from climbers and local Sherpa communities.

Understanding Everest's Weather

Mount Everest reaches so high that its summit is in the upper troposphere. It even touches the stratosphere. The air pressure at the top is only about one-third of what it is at sea level. This means there is much less oxygen to breathe.

The summit can also be hit by the very fast and cold winds of the jet stream. Winds often reach 160 km/h (100 mph). In February 2004, winds of 280 km/h (175 mph) were recorded. These strong winds make climbing very dangerous. They can blow climbers off the mountain. They also make the air pressure even lower, reducing available oxygen.

Climbers usually try to reach the summit in spring or fall. These are times when the monsoon season is starting or ending. During these periods, the jet stream moves north. This creates a window of calmer weather on the mountain.

Weather stations on Everest collect important data. The Balcony Station, set up in 2019, was the highest weather station on Earth. It was located at about 8,430 metres (27,660 ft). This station helped scientists understand high-altitude weather. It stopped sending data in January 2020.

Exciting Expeditions to Mount Everest

Mount Everest has always drawn adventurers. People have tried to climb it for many years. It is unknown if anyone climbed it in ancient times. The first known successful climb was in 1953. Even with all the effort, only about 200 people had reached the top by 1987. Everest remained a very difficult climb for a long time.

The mountain's extreme height means the jet stream can hit it. Climbers can face winds over 320 km/h (200 mph) when the weather changes. Other dangers include blizzards and avalanches.

Early Attempts to Reach the Summit

In 1885, Clinton Thomas Dent suggested that climbing Everest was possible. The northern path to the mountain was found in 1921 by George Mallory and Guy Bullock. In 1922, a British expedition made the first attempt to climb above 8,000 m (26,247 ft).

In 1924, Mallory and Andrew Irvine tried to reach the summit. They were never seen again. It is still debated if they were the first to reach the top. Their bodies were found much later.

In 1933, Lucy, Lady Houston, a British millionaire, funded a flight over Everest. Two airplanes flew over the summit to photograph the area.

Access to Everest from the north was closed to Western climbers in 1950. This happened after China took control of Tibet. So, climbers started looking for routes from Nepal. In 1950, an expedition explored the route from the south. This route later became the standard path.

In 1952, a Swiss team got permission to climb from Nepal. They set a new altitude record. Tenzing Norgay was part of this team. His experience was very helpful for the British expedition the next year.

The First Successful Ascent in 1953

In 1953, a British expedition, led by John Hunt, returned to Nepal. They planned two attempts to reach the summit. The first team got very close but had to turn back. Two days later, on May 29, 1953, Edmund Hillary from New Zealand and Tenzing Norgay, a Nepali Sherpa climber, made history. They reached the summit at 11:30 AM. They took photos and left some sweets and a small cross in the snow. Tenzing later shared that Hillary was the first to step onto the summit.

Everest Expeditions Through the Years

After the first ascent, more climbers aimed for the summit. In 1956, Ernst Schmied and Juerg Marmet made a successful climb. In May 1960, a Chinese team made the first reported ascent from the North Ridge. The first American to climb Everest was Jim Whittaker in 1963. Later that year, Tom Hornbein and Willi Unsoeld made the first traverse of the mountain. They climbed one side and descended the other.

In 1970, Japanese climbers tried a new route. Yuichiro Miura became the first person to ski down Everest from the South Col. He later became the oldest person to summit Everest, at age 70 in 2003 and again at 80 in 2013. In 1975, Junko Tabei became the first woman to reach the summit. That same year, a British team made the first climb up the Southwest Face. In 1978, Reinhold Messner and Peter Habeler made the first climb without extra oxygen.

Winter Climbing and Challenges

Mount Everest winter 1980 cert
Confirmation of the summit from Nepal's Ministry of Tourism in 1980.

In 1980, Polish climbers made the first winter ascent of Everest. This was a huge achievement, as winter conditions are extremely harsh. Leszek Cichy and Krzysztof Wielicki reached the summit on February 17, 1980. They faced hurricane-force winds and unimaginable cold. This success started a new era of winter climbing in the Himalayas.

In 1989, a Polish expedition faced a terrible challenge on the western ridge. Several climbers were lost in an avalanche. Rescues in such extreme conditions are incredibly difficult.

Recent Ascents Record

In 2026, Nepali climber Kami Rita Sherpa, then age 56, broke his own record. He ascended the mountain for the 32nd time. At the same time, Lhakpa Sherpa made her record 11th climb to the summit. These achievements show incredible skill and endurance.

Safety Lessons from Past Events

In May 1996, a severe blizzard trapped several guided expeditions. Eight climbers lost their lives. This event brought attention to the dangers of commercial climbing. It also raised questions about safety on Everest. Journalist Jon Krakauer wrote a book, Into Thin Air, about his experience during this disaster.

In 2006, 12 people died on Everest. The death of David Sharp sparked a debate about climbing ethics. People discussed whether climbers should have done more to help him. This event highlighted the extreme challenges and difficult decisions climbers face.

In 2014, a large avalanche hit near Base Camp 2. Sixteen Nepali guides were killed. This tragedy led to many climbing companies stopping their expeditions out of respect.

In 2015, a powerful earthquake caused a massive avalanche at Everest Base Camp. Eighteen people died, and the climbing season was shut down. This was the first time since 1974 that no one reached the summit in spring. The earthquake also trapped hundreds of climbers. Helicopters were used to rescue them.

Everest in the 2010s and 2020s

The 2010s saw both record numbers of climbers and tragic events. In 2019, over 890 people reached the summit, a new record. However, 11 climbers died that year. This led to concerns about crowding and delays on the mountain.

In 2020, both Nepal and China closed Everest to foreign climbers due to the COVID-19 pandemic. This meant no summits from the Nepal side that year. In October 2025, severe blizzards in the Everest Scenic Area led to the evacuation of hundreds of people.

Climbing Mount Everest

Typical Nepal Camp Altitudes
Location Altitude (km)
Summit 8848 m / 29035 ft 8.8 8.8
 
Camp 4 8000 m / 26000 ft 8.0 8
 
Camp 3 6800 m / 22300 ft 6.8 6.8
 
Camp 2 6400 m / 21000 ft 6.4 6.4
 
Camp 1 6100 m / 20000 ft 6.1 6.1
 
Base camp 5400 m / 17700 ft 5.4 5.4
 
Hillary Step near Everest top (retouched)
Looking up the southern ridgeline in 2010. The Hillary Step is visible.

Climbing Everest requires special permits from the governments of Nepal or China. These permits are expensive. In April 2025, Nepal introduced a new rule. Climbers must have summited at least one 7,000-meter peak in Nepal before trying Everest. This rule started in the Spring 2026 climbing season. This aims to make climbing safer.

Commercial Expeditions and Costs

The World’s Tallest Mountain (15473492788)
Top-down view showing the summit and its three main faces.
Gorakshep, Everest Zone, Nepal
Gorak Shep is about a three-hour walk to South Everest Base Camp.

The idea of guided trips to Everest started in the 1980s. Today, many companies offer guided expeditions. These trips can cost a lot of money, from US$35,000 to US$200,000. A "celebrity guide" might cost even more. These services often include permits, transport, food, tents, and medical help. They also provide experienced guides and porters.

The money from tourism helps the local people in Nepal. An Everest porter can earn much more than the average wage in the country. However, some people worry that commercial climbing allows inexperienced climbers to attempt the summit. This can create dangerous situations. Some famous climbers believe that the spirit of adventure is lost when everything is organized for you. They say climbers should have more experience before attempting Everest.

Special Climbing Techniques

Some teams use special altitude tents before their trip. These tents simulate high altitude. This helps climbers get used to the thin air faster. It can shorten the time needed for the expedition.

In 2025, four men climbed Everest in one week. They said they used xenon gas to help their bodies adapt. However, the International Climbing and Mountaineering Federation warned against this. They said there is no proof it helps and it could be dangerous.

Summiting with Disabilities

Many people with disabilities have achieved amazing feats on Everest. In 2013, Sudarshan Gautam, a Canadian double-amputee, summited the mountain. That same year, Eli Reimer, a teenager with Down syndrome, hiked to the South Base Camp. These stories inspire many.

Main Climbing Routes

STS058-101-12 2
Overview of the South Col route and North Col/Ridge route.

Mount Everest has two main climbing routes. The Southeast Ridge starts from Nepal, and the North Ridge starts from Tibet. The Southeast Ridge is generally considered easier and is used more often. This was the route taken by Hillary and Tenzing in 1953.

Most climbers attempt the summit in May. This is before the summer monsoon season. During this time, the jet stream moves north. This brings calmer winds to the mountain. Some attempts are made in September and October after the monsoons. However, the extra snow and less stable weather make these times more difficult.

Southeast Ridge Route Details

The journey on the Southeast Ridge begins with a trek to Everest Base Camp in Nepal. This camp is at 5,380 m (17,700 ft). Climbers usually fly to Lukla and then hike for six to eight days. This hike helps them get used to the high altitude. Yaks and porters carry equipment to Base Camp.

At Base Camp, climbers spend weeks getting used to the altitude. During this time, Sherpas set up ropes and ladders in the dangerous Khumbu Icefall. This icefall has huge blocks of ice that can shift. Many climbers have been lost here. To be safer, climbers usually start crossing the icefall before dawn. The freezing temperatures help keep the ice blocks stable.

Above the icefall is Camp I, then Camp II (Advanced Base Camp) at 6,500 m (21,300 ft). From Camp II, climbers go up the Lhotse Face using fixed ropes to Camp III. Camp III is on a small ledge at 7,470 m (24,500 ft). The next stop is Camp IV on the South Col at 7,920 m (26,000 ft).

From Camp IV, climbers enter the "death zone." They start their final push to the summit around midnight. They hope to reach the top in 10 to 12 hours. Along the way, they pass "The Balcony" and the South Summit. Then they face the "Cornice traverse," a narrow ridge. The most famous part is the Hillary Step, a 12 m (39 ft) rock wall. Sherpas set up fixed ropes here to help climbers. After the Hillary Step, it's a shorter climb to the very top. Climbers usually spend less than 30 minutes at the summit. This is to ensure they have enough time and oxygen to descend safely.

North Ridge Route Details

Mount Everest North Face
Mount Everest North Face from Rongbuk in Tibet.

The North Ridge route starts from the north side of Everest in Tibet. Expeditions trek to the Rongbuk Glacier to set up base camp at 5,180 m (16,990 ft). Climbers then move to Camp II and Camp III (Advanced Base Camp) below the North Col. To reach Camp IV on the North Col, climbers use fixed ropes.

From the North Col, climbers go up the rocky North Ridge. They set up Camp V and Camp VI. The route then crosses the North Face. Climbers face three major challenges called the "Steps." The Second Step is especially difficult. It has a metal ladder, called the "Chinese ladder," placed there in 1975. This ladder helps climbers get over this tough section. After these steps, climbers go up a snow slope to the final summit ridge.

The Summit of Everest

Amanecer desde la cima del Everest por Carlos Pauner
A view from the summit of Mount Everest in May 2013.

The very top of Everest is often described as being "the size of a dining room table." It is covered with snow and ice, which can vary in depth. The rock underneath is made of ancient limestone.

Below the summit is an area known as the "death zone." This is above 8,000 m (26,000 ft). It is called this because of the extreme dangers and very low oxygen levels.

Challenges in the Death Zone

Everest Peace Project - Everest summit
The summit of Mount Everest from the North side.
Everest-fromKalarPatar
From Kala Patthar, Nepal.

In the "death zone," climbers face huge challenges to survive. Temperatures are extremely low, causing severe frostbite if skin is exposed. Strong winds are also a constant threat.

The biggest danger is the very low air pressure. At the summit, there is only about one-third as much oxygen as at sea level. Without getting used to this, a person could lose consciousness in minutes. Even with acclimatization, breathing is very hard. Climbers often take 80-90 breaths per minute just to get enough oxygen. This causes extreme exhaustion.

Lack of oxygen, cold, and exhaustion make quick decisions difficult. If a climber gets injured and cannot walk, rescue is almost impossible. Helicopters usually cannot fly that high. Carrying someone down is very risky for the rescuers. Many people who pass away on the mountain are left there.

Most deaths on Everest happen in the death zone, often during the descent. Falling is a major danger. Avalanches are more common at lower altitudes. Despite its dangers, Everest is safer than some other very high peaks. This is due to its popularity and the support available.

Another health risk is retinal haemorrhages, which can harm eyesight. These usually heal, but in 2010, a climber went blind and died in the death zone.

Using Extra Oxygen for Climbing

Iván Ernesto Gómez Carrasco en la cima del Monte Everest
A climber at the summit wearing an oxygen mask.
Everest Oxygen Graph
Graph showing available oxygen at Everest.

Most climbers use oxygen masks and tanks above 8,000 m (26,247 ft). Climbing Everest without extra oxygen is possible, but only for the most skilled mountaineers. It also carries a much higher risk. About 95% of climbers who reach the summit use bottled oxygen. The death rate is twice as high for those who try without it. Low oxygen can also affect thinking and decision-making.

The use of bottled oxygen has been debated for a long time. Some early climbers felt it was "unsportsmanlike." However, George Mallory later realized he needed it. When Tenzing and Hillary made the first successful climb, they used oxygen. For many years, it was standard practice.

In 1978, Reinhold Messner and Peter Habeler were the first to climb Everest without extra oxygen. Messner later climbed it solo without oxygen in 1980. After this, some people argued that Everest should be climbed without oxygen.

The 1996 disaster intensified this debate. Some argued that bottled oxygen allowed less qualified climbers to attempt the summit. This led to dangerous crowding. They suggested banning oxygen, except for emergencies. This would also help reduce pollution from discarded oxygen bottles.

Low oxygen can cause mental fogginess, even after returning to lower altitudes. In severe cases, climbers can have hallucinations. Some studies show that high-altitude climbing can even change brain structure.

Autumn Climbing on Everest

Mount Everest as seen from Drukair
Everest in September 2006.

While spring is the most popular climbing season, Everest has also been climbed in the autumn. This is after the monsoon season. For example, in 2010, Eric Larsen and five Nepali guides summited in the autumn. The autumn season can be more dangerous due to fresh, unstable snow. However, this makes it popular for winter sports like skiing.

Everest has also been climbed in winter. But this is very rare due to extreme cold, high winds, and shorter days. In January, winds can reach 270 km/h (170 mph). The average summit temperature is around −33 °F (−36 °C).

Timeline of Key Everest Ascents

KhumbuIcefall
The Khumbu Icefall in 2005.
Western Cwm - 14th May 2011
The Western Cwm ("Coom"), with Everest on the left and Lhotse to the right.

By the end of 2010, there had been over 5,100 ascents to the summit. Here are some important "firsts":

  • 1922: First climb above 8,000 metres (26,247 ft).
  • 1953: First ascent by Tenzing Norgay and Edmund Hillary.
  • 1960: First reported ascent from the North Ridge by a Chinese team.
  • 1975: First female ascent by Junko Tabei.
  • 1978: First ascent without supplemental oxygen by Reinhold Messner and Peter Habeler.
  • 1980: First winter ascent by Polish climbers Leszek Cichy and Krzysztof Wielicki.
  • 1988: First descent by paraglider.
  • 2001: First ascent by a blind climber, Erik Weihenmayer.
  • 2025: First descent by ski without supplemental oxygen by Andrzej Bargiel.

Aviation Adventures Around Everest

Mount Everest has also been a site for amazing aviation feats.

1933: Flying Over the Summit

Eurocopter AS-350B-3 Ecureuil AN0980259
A Eurocopter AS350 B3 "Squirrel" helicopter.

In 1933, Lucy, Lady Houston funded the Houston Everest Flight. A group of airplanes, led by the Marquess of Clydesdale, flew over the summit. Their goal was to photograph the unexplored terrain.

1988: First Climb and Glide

On September 26, 1988, Jean-Marc Boivin climbed Everest. Then, he made the first paraglider descent from the mountain. He set a record for the fastest descent and the highest paraglider flight.

1991: Hot Air Balloon Flyover

In 1991, four men in two balloons made the first hot-air balloon flight over Mount Everest. They used special balloons designed for high altitudes. This was a truly unique way to see the world's highest peak.

2005: Helicopter Lands on Summit

In May 2005, French pilot Didier Delsalle landed a Eurocopter AS350 B3 helicopter on Everest's summit. He stayed for about four minutes. This set world records for the highest helicopter landing and take-off. This achievement also meant a better chance for high-altitude rescues.

2011: Paragliding from the Summit

On May 21, 2011, Nepalis Lakpa Tsheri Sherpa and Sano Babu Sunuwar paraglided from Everest's summit. They flew down to Namche Bazaar in just 42 minutes. They then continued their journey by hiking, biking, and kayaking to the Indian Ocean. They reached the Bay of Bengal by June 27, 2011. This made them the first people to complete a continuous summit-to-sea descent from Everest.

2014: Helicopter-Assisted Ascent Debate

In 2014, climber Wang Jing used a helicopter to fly over the Khumbu Icefall. She flew from South Base Camp to Camp II. From there, she climbed to the summit. This sparked a debate in the climbing world. Many questioned if this was a fair way to climb Everest. Nepal investigated the matter. Wang Jing stated she flew because the icefall was impassable. She later received an award from the Nepal government for her contributions.

2016: More Helicopter Use

By 2016, helicopters were used more often on Everest. They helped transport materials over the dangerous Khumbu Icefall. This made expeditions more efficient. After many Nepali porters died in the icefall in 2014, the government wanted helicopters to handle more transport. This was put into action in 2016. Helicopters also proved vital in rescuing many people during the 2015 earthquake.

Extreme Sports on Everest

Mount Everest is not just for traditional climbing. It has also been a place for other extreme winter sports. These include snowboarding, skiing, and paragliding.

Yuichiro Miura was the first to ski down Everest in the 1970s. He skied a long way from the South Col. In 2001, Stefan Gatt and Marco Siffredi snowboarded Everest. Other skiers include Davo Karničar and Kit DesLauriers. In 2025, Andrzej Bargiel completed the first ski descent without extra oxygen.

Gliding descents, like paragliding, have become more popular. They offer a very fast way to get down the mountain. In 1988, Jean-Marc Boivin made the first paraglider descent. In 2011, Sano Babu Sunuwar and Lakpa Tsheri Sherpa glided from the summit. They descended 5,000 metres (16,400 ft) in just 45 minutes.

Religious Significance of Mount Everest

Rongbuk Monastery Everest
The Rongbuk Monastery, with Mount Everest in the background.

Mount Everest holds deep spiritual meaning for many people. The southern part of Everest is seen as one of several "hidden valleys" of refuge. These were named by Padmasambhava, a Buddhist saint from the ninth century.

Near the base of Everest's north side is Rongbuk Monastery. It is called the "sacred threshold to Mount Everest." It offers amazing views of the mountain. For the Sherpa people in Nepal, Rongbuk Monastery is a very important pilgrimage site.

The Sherpa people believe that Miyolangsangma, a Tibetan Buddhist goddess, lives at the top of Mount Everest. They see the mountain as her palace and playground. Climbers are considered guests who have arrived without an invitation.

Sherpas also believe that Everest and its slopes have strong spiritual energy. They feel one should show great respect when in this sacred place. They believe that actions and thoughts have a stronger impact here.

Managing Waste on Mount Everest

Pollution, especially human waste, has become a serious problem on Mount Everest. In 2015, experts warned that waste levels were critical. Each climbing season, thousands of kilograms of human waste are left on the mountain. This waste is often buried in the snow or thrown into crevasses. This can contaminate the mountain.

The problem is made worse by other trash. This includes used oxygen tanks, old tents, and empty cans. To help with this, the Nepali government now requires climbers to carry down eight kilograms of waste.

In February 2019, China closed its Everest base camp to tourists without climbing permits. This was due to the growing waste problem. Tourists can now only go as far as the Rongbuk Monastery. In April 2019, a campaign was launched to collect thousands of kilograms of garbage from Everest. Efforts to remove waste continue in 2024.

See also

Kids robot.svg In Spanish: Monte Everest para niños

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