K2 in the context of "Tibetan Plateau"

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.

The eight-thousanders are 14 mountains recognized by the International Mountaineering and Climbing Federation (UIAA) with summits that exceed 8,000 metres (26,247 ft) in elevation above sea level and are sufficiently independent of neighbouring peaks as measured by topographic prominence. There is no formally agreed-upon definition of prominence, however, and at times the UIAA has considered whether the list of 8,000-metre peaks should be expanded to 20 peaks by including the major satellite peaks of the canonical 14 eight-thousanders. All of the Earth's eight-thousanders are located in the Himalayan and Karakoram mountain ranges in Asia, and their summits lie in the altitude range known as the death zone, where atmospheric oxygen pressure is insufficient to sustain human life for extended periods of time.

From 1950 to 1964, all 14 of the eight-thousanders were first summited by expedition climbers in the summer season (the first to be summited was Annapurna I in 1950, and the last was Shishapangma in 1964); from 1980 to 2021, all 14 were summited in the winter season (the first to be summited in winter was Mount Everest in 1980, and the last was K2 in 2021). As measured by a variety of statistical techniques, the deadliest eight-thousander is Annapurna I, with one death (climber or climber support) for every three summiters, followed by K2 and Nanga Parbat (each with one death for every four to five summiters), and then Dhaulagiri and Kangchenjunga (each with one death for every six to seven summiters).

Shigar District (Urdu: ضلع شِگر) is a district in Gilgit-Baltistan area of Pakistan in the disputed Kashmir region. It is home to the world's second highest peak, K2, also known as Chhogori and Mount Godwin-Austen. The district is bounded on the north by the Nagar District, the Hunza District, and the Kashgar Prefecture of China's Xinjiang Uyghur Autonomous Region, on the south-east by the Ghanche District, on the south-west by the Rondu and Skardu districts, and on the west by the Gilgit District. Shigar District was established in 2015, prior to which it had been part of the Skardu District.

The headquarters of the Shigar District is the town of Shigar, which is 30 kilometres (19 mi) from the city of Skardu. Less than 7% of the district consists of alpine pastures, with over 90% of remaining area being permanently snow covered.

Baltistan (English: /ˌbɔːltɪˈstɑːn/, Urdu: [bəlt̪ɪst̪aːn]); also known as Baltiyul or Little Tibet, is a mountainous region in the Pakistani-administered territory of Gilgit-Baltistan and constitutes a northern portion of the larger Kashmir region that has been the subject of a dispute between India and Pakistan since 1947. It is located near the Karakoram (south of K2) and borders Gilgit to the west, China's Xinjiang to the north, Indian-administered Ladakh to the southeast, and the Indian-administered Kashmir Valley to the southwest. The average altitude of the region is over 3,350 metres (10,990 ft). Baltistan is largely administered under the Baltistan Division.

Prior to the partition of British India in 1947, Baltistan was part of the princely state of Jammu and Kashmir, having been conquered by Gulab Singh's armies in 1840. Baltistan and Ladakh were administered jointly under one wazarat (district) of the state. The region retained its identity in this setup as the Skardu tehsil, with Kargil and Leh being the other two tehsils of the district. After Hari Singh, the last maharaja of Jammu and Kashmir, acceded to the Dominion of India in 1947, his local governor in Gilgit was overthrown by the Gilgit Scouts, who then took the entire region for Pakistan during the Indo-Pakistani War of 1947–1948. The Gilgit Agency and Skardu tehsil, as well as a portion of Kargil tehsil, have since been under Pakistani governance while the Kashmir Valley as well as Leh tehsil and most of the Kargil tehsil remain under Indian governance. The Chorbat Valley, geographically in the Baltistan region, was de-facto partitioned when its four villages (with one Bogdang already under Indian control since 1947) were captured by India during the Indo-Pakistani War of 1971, and were incorporated into the erstwhile state of Jammu and Kashmir (now in Ladakh).

The Baltoro Glacier (Balti: བལྟོརོ་གངས།, romanized: Baltoro gangs, lit. 'Bone breaker';Urdu: بالتورو گلیشیر) is a glacier located in the Shigar District of the Gilgit-Baltistan, Pakistan.

The glacier lies in the Karakoram range, and is surrounded by some of the world's highest peaks, including K2 (8,611 metres (28,251 ft)), the second highest mountain on Earth, as well as three other summits above 8,000 meters within a 20-kilometre radius.

A serac (/səˈræk, ˈsɛræk/; from Swiss French sérac [seʁak], a type of cheese) is a block or column of glacial ice, often formed by intersecting crevasses on a glacier. Commonly house-sized or larger, they are dangerous to mountaineers, since they may topple with little warning. Even when stabilized by persistent cold weather, they can be an impediment to glacier travel.

Seracs are found within an icefall, often in large numbers, or on ice faces on the lower edge of a hanging glacier. Notable examples of the overhanging glacier edge type are well-known obstacles on some of the world's highest mountains, including K2 at "The Bottleneck" and Kanchenjunga on the border of India and Nepal. Significant seracs in the Alps are found on the northeast face of Piz Roseg, the north face of the Dent d'Hérens, and the north face of Lyskamm.

The Great Trigonometrical Survey of India was a project that aimed to carry out a survey across the Indian subcontinent with scientific precision. It was begun in 1802 by the British infantry officer William Lambton, under the auspices of the East India Company. Under the leadership of his successor, George Everest, the project was made the responsibility of the Survey of India. Everest was succeeded by Andrew Scott Waugh, and after 1861, the project was led by James Walker, who oversaw its completion in 1871.

Among the many accomplishments of the Survey were the demarcation of the British territories in the subcontinent and the measurement of the height of the Himalayan giants: Everest, K2, and Kangchenjunga. The Survey had an enormous scientific impact as well. It was responsible for one of the first accurate measurements of a section of an arc of longitude, and for measurements of the geodesic anomaly, which led to the development of the theories of isostasy.