Kangchenjunga, also spelled Kanchenjunga, is the third highest mountain in the world.

It rises with an elevation of 8,586 m (28,169 ft) in a section of the Himalayas called Kangchenjunga Himal delimited in the west by the Tamur River, in the north by the Lhonak Chu and Jongsang La, and in the east by the Teesta River. It lies between Nepal and Sikkim, India, with three of the five peaks, namely Main, Central and South, directly on the border, and the peaks West and Kangbachen in Nepal’s Taplejung District.

Until 1852, Kangchenjunga was assumed to be the highest mountain in the world, but calculations based on various readings and measurements made by the Great Trigonometrical Survey of India in 1849 came to the conclusion that Mount Everest, known as Peak XV at the time, was the highest. Allowing for further verification of all calculations, it was officially announced in 1856 that Kangchenjunga is the third highest mountain in the world.

Kangchenjunga was first climbed on 25 May 1955 by Joe Brown and George Band, who were part of the 1955 British Kangchenjunga expedition. They stopped short of the summit in accordance with the promise given to the Chogyal that the top of the mountain would remain intact. Every climber or climbing group that has reached the summit has followed this tradition.

Kangchenjunga is the official spelling adopted by Douglas Freshfield, Alexander Mitchell Kellas and the Royal Geographical Society that gives the best indication of the Tibetan pronunciation. Freshfield referred to the spelling used by the Indian Government since the late 19th century. Alternative spellings include Kanchenjunga, Khangchendzonga and Kangchendzönga.

The brothers Hermann, Adolf and Robert Schlagintweit explained the local name ‘Kanchinjínga’ meaning “The five treasures of the high snow” as originating from the Tibetan word “gangs” pronounced [kaŋ] meaning snow, ice; “chen” pronounced [tɕen] meaning great; “mzod” meaning treasure; “lnga” meaning five.

Local Lhopo people believe that the treasures are hidden but reveal themselves to the devout when the world is in peril; the treasures comprise salt, gold, turquoise and precious stones, sacred scriptures, invincible armor or ammunition, grain and medicine.
Kangchenjunga’s name in the Limbu language is Senjelungma or Seseylungma, and is believed to be an abode of the omnipotent goddess Yuma Sammang.

The Kangchenjunga Himal section of the Himalayas lies both in Nepal and India and encompasses 16 peaks over 7,000 m (23,000 ft). In the north, it is limited by the Lhonak Chu, Goma Chu, and Jongsang La, and in the east by the Teesta River. The western limit runs from the Jongsang La down the Gingsang and Kangchenjunga glaciers and the rivers of Ghunsa and Tamur.[1] Kanchenjunga rises about 20 km (12 mi) south of the general alignment of the Great Himalayan range about 125 km (78 mi) east-southeast of Mount Everest as the crow flies. South of the southern face of Kanchenjunga runs the 3,000–3,500 m (9,800–11,500 ft) high Singalila Ridge that separates Sikkim from Nepal and northern West Bengal.

The main ridge of the massif runs from north-northeast to south-southwest and forms a watershed to several rivers.[16] Together with ridges running roughly from east to west they form a giant cross. These ridges contain a host of peaks between 6,000 and 8,586 m (19,685 and 28,169 ft). The northern section includes Yalung Kang, Kangchenjunga Central and South, Kangbachen, Kirat Chuli, and Gimmigela Chuli, and runs up to the Jongsang La. The eastern ridge in Sikkim includes Siniolchu. The southern section runs along the Nepal-Sikkim border and includes Kabru I to III. This ridge extends southwards to the Singalila Ridge. The western ridge culminates in the Kumbhakarna, also known as Jannu.

Four main glaciers radiate from the peak, pointing roughly to the northeast, southeast, northwest, and southwest. The Zemu glacier in the northeast and the Talung glacier in the southeast drain to the Teesta River; the Yalung glacier in the southwest and the Kangchen glacier in the northwest drain to the Arun and Kosi rivers. The glaciers spread over the area above approximately 5,000 m (16,000 ft), and the glacialized area covers about 314 km2 (121 sq mi) in total. There are 120 glaciers in the Kanchenjunga Himal, of which 17 are debris-covered. Between 1958 and 1992, more than half of 57 examined glaciers had retreated, possibly due to rising of air temperature.

Kangchenjunga Main is the highest elevation of the Brahmaputra River basin, which forms part of the southeast Asian monsoon regime and is among the globally largest river basins. Kangchenjunga is one of six peaks above 8,000 m (26,000 ft) located in the basin of the Koshi river, which is among the largest tributaries of the Ganges. The Kangchenjunga massif forms also part of the Ganges Basin.

Although it is the third highest peak in the world, Kangchenjunga is only ranked 29th by topographic prominence, a measure of a mountain’s independent stature. The key col for Kangchenjunga lies at a height of 4,664 metres (15,302 ft), along the watershed boundary between Arun and Brahmaputra rivers in Tibet. It is however, the 4th most prominent peak in the Himalaya, after Everest, and the western and eastern anchors of the Himalaya, Nanga Parbat, and Namcha Barwa, respectively.

Climbing routes
There are four climbing routes to reach the summit of Kangchenjunga, three of which are in Nepal from the southwest, northwest, and northeast, and one from northeastern Sikkim in India. To date, the northeastern route from Sikkim has been successfully used only three times. The Indian government has banned expeditions to Kanchenjunga; therefore, this route has been closed since 2000.