Eight-thousander in the context of Cho Oyu

The Karakoram (/ˌkɑːrəˈkɔːrəm, ˌkær-/) is a mountain range in Asia located primarily in the Kashmir region. The range spans the borders of Pakistan, China, and India, with the north-western extremities of the range extending into Afghanistan and Tajikistan. The Karakoram contains four of the fourteen eight-thousanders, the highest of which is K2, the second highest mountain on Earth.

The Karakoram begins in the Wakhan Corridor in western Afghanistan and extends eastwards into Indian-administered Ladakh and Chinese-administered Aksai Chin, as well as the Chinese province of Xinjiang. Most of the Karakoram is located within the Pakistani-administered Gilgit-Baltistan region. The Karakoram is bounded on the east by the Aksai Chin plateau, on the north-east by the edge of the Tibetan Plateau, and on the north by the river valleys of the Yarkand and Karakash rivers, beyond which lie the Kunlun Mountains. At the north-west corner are the Pamir Mountains. The southern boundary of the Karakoram is formed west to east by the Gilgit, Indus, and Shyok rivers, which separate the range from the north-western end of the Himalaya. These rivers flow north-west before making an abrupt turn south-westwards towards the plains of Pakistan. Roughly in the middle of the Karakoram range is the Karakoram Pass, which was part of a now unused trade route between Ladakh and Yarkand.

Nanga Parbat, known locally as Diamer, is the ninth-highest mountain on Earth with its summit at 8,126 m (26,660 ft) above sea level. Lying immediately southeast of the northernmost bend of the Indus River in the Gilgit-Baltistan region of Pakistan-administered Kashmir, Nanga Parbat is the westernmost major peak of the Himalayas, and thus in the traditional view of the Himalayas as bounded by the Indus and Yarlung Tsangpo/Brahmaputra rivers, it is the western anchor of the entire mountain range.

Nanga Parbat is one of the 14 eight-thousanders. It rises far above its surrounding terrain and has the second-highest prominence among the 100 tallest mountains on Earth only behind Mount Everest. Nanga Parbat is well-known for being an extremely difficult climb, and has earned the nickname Killer Mountain for its high number of climber fatalities and pushing climbers to their limits. According to Guinness World Records, Nanga Parbat is the fastest growing mountain in the world, growing taller at a rate of 7 mm (0.27 in) per year.

Skardu (Urdu: سکردو, romanized: skardū, Tibetan script: སྐར་མདོ, pronounced [skərduː]) is a city located in Pakistan-administered Gilgit-Baltistan in the disputed Kashmir region. Skardu serves as the capital of Skardu District and the Baltistan Division. It is situated at an average elevation of nearly 2,500 metres (8,202 feet) above sea level in the Skardu Valley, at the confluence of the Indus and Shigar rivers. It is an important gateway to the eight-thousanders of the nearby Karakoram mountain range. The Indus River running through the region separates the Karakoram from the Ladakh Range.

In mountaineering and climbing, a first ascent (abbreviated to FA in guide books), is the first successful documented climb to the top of a mountain peak or the top of a particular climbing route. Early 20th-century mountaineers and climbers were mainly focused on reaching the tops of notable mountain peaks (e.g. the eight-thousanders such as Mount Everest) and the tops of iconic climbing routes (e.g. the great north faces of the Alps such as the Eiger) by whatever means possible, and often using considerable amounts of aid climbing and/or with large expedition style support teams allowing them to "lay siege" to the climb.

As all the key tops were summited, the manner or "style" in which each top was reached became important to climbers, and particularly the ability to complete the ascent without the use of any artificial aids, which is called free climbing. In free-climbing, the term first free ascent (abbreviated FFA) denotes where a mountain or climbing route is ascended without any artificial aid — note that equipment for protection in the event of a fall can be used as long as they did not aid in the climber's upward progression. Completing the FFA of a climbing route is often called freeing (or more latterly sending) a route, and is highly coveted.

Lhotse (Nepali: ल्होत्से, romanized: L'hōtsē [lotse]; Standard Tibetan: ལྷོ་རྩེ, romanized: lho tse, lit. 'South Peak' [l̥otse]; Chinese: 洛子峰) is the fourth-highest mountain on Earth, after Mount Everest, K2, and Kangchenjunga. At an elevation of 8,516 metres (27,940 ft) above sea level, the main summit is on the border between the Tibet Autonomous Region of China and the Khumbu region of Nepal.

With Everest to the north and Nuptse to the west, Lhotse forms the apex of the massive horseshoe-shaped arc of the Everest massif. Despite the tremendous vertical relief of its South and Northeast Faces, it is the least prominent of the eight-thousanders due to the great height of the South Col between it and Everest. Lhotse's Western Face, recessed behind the head of the Khumbu Glacier in the Western Cwm, plays an integral part in the standard routes of ascent for both peaks. The name Lhotse, which means "South Peak" in Tibetan, further emphasizes the close relationship between the two.

Annapurna (/ˌænəˈpʊərnəˌ -ˈpɜːr-/; Nepali: अन्नपूर्ण) is a mountain situated in the Annapurna mountain range of Gandaki Province, north-central Nepal. It is the 10th highest mountain in the world at 8,091 metres (26,545 ft) above sea level and is well known for the difficulty and danger involved in its ascent.

Maurice Herzog led a French expedition to its summit through the north face in 1950, making it the first eight-thousander to be successfully climbed. The entire massif and surrounding area are protected within the 7,629-square-kilometre (2,946 sq mi) Annapurna Conservation Area, the first and largest conservation area in Nepal. The Annapurna Conservation Area is home to several world-class treks, including Annapurna Sanctuary and Annapurna Circuit.

In mountaineering, the death zone refers to altitudes above which the pressure of oxygen is insufficient to sustain human life for an extended time span. This point is generally considered to be 8,000 m (26,200 ft), where atmospheric pressure is less than 356 millibars (10.5 inHg; 5.16 psi). The concept was conceived in 1953 by Edouard Wyss-Dunant, a Swiss doctor, who called it the lethal zone. All 14 peaks above 8000 m (the "eight-thousanders") in the death zone are located in the Himalaya and Karakoram regions of Asia.

Many deaths in high-altitude mountaineering have been caused by the effects of the death zone, either directly by the loss of vital functions or indirectly by poor decisions made under stress (e.g., not turning back in deteriorating conditions, or misreading the climbing route), or physical weakening leading to accidents (e.g., falls). An extended stay above 8,000 m (26,200 ft) without a high-altitude breathing apparatus (which includes bottled oxygen) will result in deterioration of bodily functions and death.

The Karakoram (English: /ˌkɑːrəˈkɔːrəm, ˌkær-/, Urdu: [kaːɾaːkoːɾəm]) is a mountain range in Asia located primarily in the Kashmir region. The range spans the borders of Pakistan, China, and India, with the north-western extremities of the range extending into Afghanistan and Tajikistan. The Karakoram contains four of the fourteen eight-thousanders, the highest of which is K2, the second highest mountain on Earth.

The Karakoram begins in the Wakhan Corridor in western Afghanistan and extends eastwards into Indian-administered Ladakh and Chinese-administered Aksai Chin, as well as the Chinese province of Xinjiang. Most of the Karakoram is located within the Pakistani-administered Gilgit-Baltistan region. The Karakoram is bounded on the east by the Aksai Chin plateau, on the north-east by the edge of the Tibetan Plateau, and on the north by the river valleys of the Yarkand and Karakash rivers, beyond which lie the Kunlun Mountains. At the north-west corner are the Pamir Mountains. The southern boundary of the Karakoram is formed west to east by the Gilgit, Indus, and Shyok rivers, which separate the range from the north-western end of the Himalaya. These rivers flow north-west before making an abrupt turn south-westwards towards the plains of Pakistan. Roughly in the middle of the Karakoram range is the Karakoram Pass, which was part of a now unused trade route between Ladakh and Yarkand.

Shigar (Urdu: شگر) is the headquarter of its namesake district and tehsil in the Baltistan division of Gilgit-Baltistan region in northern Pakistan. It is located on the bank of the Shigar River in the most remote part of the region. It is a popular site for tourists and trekkers and contains many historical buildings of architectural significance associated with several different communities.

The town is inhabited almost exclusively by the Balti people of Tibetan descent. Almost 65% of the population belongs to the Shia sect of Islam, 26% to the Norbakhshi sect and the remaining to the Sunni sect. Via the Shigar Valley, it is the gateway to the Karakoram mountain range, which has five eight-thousanders, including K2.

The Baltoro Muztagh (simplified Chinese: 巴尔托洛慕士塔格山; traditional Chinese: 巴爾托洛慕士塔格山; pinyin: Bā'ěrtuōluò Mùshìtǎgé Shān, Urdu: بلتورو موز تاغ) is a subrange within the Karakoram mountain range. It spans across the Baltistan region of Gilgit-Baltistan, which is the northernmost political entity of Pakistan, and extends into Xinjiang, China. The crest of this range also serves as part of the Pakistan-China border.

The range is home to K2 which has an elevation of 8,611 metres (28,251 ft) above sea level, which is also the second highest mountain in the world. Additionally, it is home to three other eight-thousander peaks, all located on the north and east sides of the Baltoro Glacier.

The eight-thousanders are the 14 mountains that rise more than 8,000 metres (26,247 ft) above sea level. They are all in the Himalayan and Karakoram mountain ranges. This is a list of mountaineers who have died on these mountains.

Makalu (Nepali: मकालु हिमाल, romanized: Makālu himāl; Chinese: 马卡鲁峰; pinyin: Mǎkǎlǔ Fēng; Limbu: ᤔᤠᤁᤠᤗᤢᤱᤔᤠ, Makalungma) is the fifth-highest mountain on Earth, with a summit at an elevation of 8,485 metres (27,838 ft) AMSL. It is located in the Mahalangur Himalayas 19 km (12 mi) southeast of Mount Everest, on the China–Nepal border. One of the eight-thousanders, Makalu is an isolated peak shaped like a four-sided pyramid.

Makalu has two notable subsidiary peaks. Kangchungtse, or Makalu II (7,678 m (25,190 ft)), lies about three kilometres (two miles) north-northwest of the main summit. Rising about 5 km (3 mi) north-northeast of the main summit across a broad plateau, and connected to Kangchungtse by a narrow, 7,200 m (23,600 ft) saddle, is Chomo Lonzo (7,804 m (25,604 ft)).