Kanchenjunga

Kanchenjunga is the third-highest mountain on Earth, rising to 8,586 metres (28,169 feet) in the eastern Himalayas along the border between the Indian state of Sikkim and the Taplejung District of eastern Nepal. It is the highest mountain situated within Indian territory, a distinction frequently tested in the UPSC Civil Services examination's General Studies Paper I, which treats Indian and world physical geography. The name derives from the Tibetan-origin Sikkimese phrase often rendered "Kang-chen-dzö-nga," conventionally translated as "the Five Treasures of the Great Snow," referring to the massif's five principal summits, of which the main peak is the loftiest. The mountain forms part of the Greater Himalayas (Himadri), the northernmost and highest of the three parallel Himalayan ranges, and was for several decades after early survey work in the nineteenth century erroneously believed to be the world's highest peak until the Great Trigonometrical Survey of India established the supremacy of Mount Everest (Peak XV) in 1852.

Geologically, Kanchenjunga belongs to the folded mountain system produced by the collision of the Indian Plate with the Eurasian Plate, an ongoing convergence that began roughly 50 million years ago and continues to elevate the range. The massif is composed largely of gneisses and schists of the Higher Himalayan Crystalline sequence, thrust over younger sedimentary rocks along major fault planes such as the Main Central Thrust. The summit complex feeds several large glaciers—the Zemu Glacier to the northeast, the Talung to the southeast, the Yalung to the southwest, and the Kanchenjunga Glacier to the northwest—which collectively constitute a significant reservoir of frozen freshwater. Meltwater from these glaciers contributes to the Teesta River system in Sikkim, a tributary of the Brahmaputra, underscoring the peak's hydrological importance to the eastern Himalayan watershed.

The mountain's principal summits include Kanchenjunga Main, Kanchenjunga West (Yalung Kang), Kanchenjunga Central, Kanchenjunga South, and Kangbachen, several of which themselves exceed 8,000 metres. The southwest and northeast faces present markedly different climbing challenges, and the peak's reputation for technical difficulty and avalanche hazard makes it among the most dangerous of the fourteen eight-thousanders. For physical-geography purposes the candidate should locate Kanchenjunga relative to neighbouring high peaks: Everest and Lhotse lie to the west on the Nepal–China frontier, while Makalu also rises in eastern Nepal, making the Kanchenjunga–Everest belt the highest segment of the entire Himalayan arc.

The first successful ascent was achieved on 25 May 1955 by Joe Brown and George Band of a British expedition led by Charles Evans, who—honouring a pledge made to the Chogyal (ruler) of Sikkim and to local religious sentiment—stopped a few feet short of the actual summit so as not to defile the sacred ground. This tradition of leaving the topmost point untrodden has been respected by many subsequent expeditions and reflects the mountain's standing as a deity in Sikkimese and Lepcha belief. The Indian flank of the massif lies within the Khangchendzonga National Park, established in 1977 and inscribed in 2016 as India's first "mixed" UNESCO World Heritage Site, recognised for both its outstanding biodiversity and the cultural-spiritual significance the mountain holds for indigenous communities. The Government of Sikkim has restricted mountaineering on the Indian side out of respect for these religious sensibilities.

Aspirants should distinguish Kanchenjunga from adjacent geographical concepts. It is not the highest peak of the Himalayan system overall—that is Mount Everest (8,849 m) on the Nepal–China border—nor is it located in the western or central Himalayas where Nanda Devi (the second-highest peak wholly within India before Sikkim's 1975 merger questions are considered) and Nanga Parbat lie. Candidates routinely confuse Kanchenjunga with Nanda Devi when asked for "the highest peak in India"; the correct contemporary answer is Kanchenjunga, since Sikkim acceded to the Indian Union in 1975, while Nanda Devi (7,816 m) in Uttarakhand is the highest peak lying entirely within India. The massif should also be differentiated from the lower Shiwalik and Lesser Himalayan (Himachal) ranges that lie to its south.

Contemporary issues surrounding Kanchenjunga include accelerated glacial retreat and the formation of glacial lakes, raising the risk of glacial lake outburst floods (GLOFs) in the Teesta basin—a hazard underscored by the October 2023 South Lhonak Lake outburst flood in Sikkim, which devastated downstream infrastructure including the Teesta-III hydroelectric dam. The transboundary character of the massif also makes it relevant to India–Nepal cooperation on conservation and disaster management, while the Kangchenjunga Landscape Conservation and Development Initiative coordinates ecological efforts across India, Nepal, and Bhutan. Climate-driven changes to its glaciers carry direct consequences for water security in the eastern Gangetic plain.

For the working civil-services aspirant, Kanchenjunga functions as a reliable anchor for several interlinked themes: Indian physical geography, the structure of the Himalayan ranges, glaciology and river systems, biodiversity and World Heritage policy, and contemporary disaster management. Mastery of its precise elevation, location, first ascent, and protected-area status equips the candidate to answer both factual prelims questions and analytical mains questions on Himalayan ecology and trans-Himalayan cooperation. Its dual identity as a measurable geographical superlative and a living sacred landscape illustrates the intersection of physical and cultural geography that the examination increasingly rewards.