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The Himalayas, or Himalaya (; ; ), is a
mountain range A mountain range or hill range is a series of mountains or hills arranged in a line and connected by high ground. A mountain system or mountain belt is a group of mountain ranges with similarity in form, structure, and alignment that have arise ...
in Asia, separating the plains of the
Indian subcontinent The Indian subcontinent is a list of the physiographic regions of the world, physiographical region in United Nations geoscheme for Asia#Southern Asia, Southern Asia. It is situated on the Indian Plate, projecting southwards into the Indian O ...
from the
Tibetan Plateau The Tibetan Plateau (, also known as the Qinghai–Tibet Plateau or the Qing–Zang Plateau () or as the Himalayan Plateau in India, is a vast elevated plateau located at the intersection of Central, South and East Asia covering most of the ...
. The range has some of the planet's highest peaks, including the very highest,
Mount Everest Mount Everest (; Tibetic languages, Tibetan: ''Chomolungma'' ; ) is List of highest mountains on Earth, Earth's highest mountain above sea level, located in the Mahalangur Himal sub-range of the Himalayas. The China–Nepal border ru ...
. Over 100 peaks exceeding in elevation lie in the Himalayas. By contrast, the highest peak outside Asia (
Aconcagua Aconcagua () is a mountain in the Principal Cordillera of the Andes mountain range, in Mendoza Province, Argentina. It is the highest mountain in the Americas, the highest outside Asia, and the highest in the Southern Hemisphere with a summi ...
, in the
Andes The Andes, Andes Mountains or Andean Mountains (; ) are the longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range is long, wide (widest between 18°S – 20°S ...
) is tall. The Himalayas abut or cross five countries:
Bhutan Bhutan (; dz, འབྲུག་ཡུལ་, Druk Yul ), officially the Kingdom of Bhutan,), is a landlocked country in South Asia. It is situated in the Eastern Himalayas, between China in the north and India in the south. A mountainou ...
, India,
Nepal Nepal (; ne, :ne:नेपाल, नेपाल ), formerly the Federal Democratic Republic of Nepal ( ne, सङ्घीय लोकतान्त्रिक गणतन्त्र नेपाल ), is a landlocked country in S ...
, China, and Pakistan. The sovereignty of the range in the Kashmir region is disputed among India, Pakistan, and China. The Himalayan range is bordered on the northwest by the Karakoram and
Hindu Kush The Hindu Kush is an mountain range in Central and South Asia to the west of the Himalayas. It stretches from central and western Afghanistan, Quote: "The Hindu Kush mountains run along the Afghan border with the North-West Frontier Province ...
ranges, on the north by the Tibetan Plateau, and on the south by the Indo-Gangetic Plain. Some of the world's major
river A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of w ...
s, the Indus, the
Ganges The Ganges ( ) (in India: Ganga ( ); in Bangladesh: Padma ( )). "The Ganges Basin, known in India as the Ganga and in Bangladesh as the Padma, is an international river to which India, Bangladesh, Nepal and China are the riparian states." is ...
, and the Tsangpo– Brahmaputra, rise in the vicinity of the Himalayas, and their combined
drainage basin A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, ...
is home to some 600 million people; 53 million people live in the Himalayas. The Himalayas have profoundly shaped the cultures of
South Asia South Asia is the southern subregion of Asia, which is defined in both geographical Geography (from Greek: , ''geographia''. Combination of Greek words ‘Geo’ (The Earth) and ‘Graphien’ (to describe), literally "earth descr ...
and
Tibet Tibet (; ''Böd''; ) is a region in East Asia, covering much of the Tibetan Plateau and spanning about . It is the traditional homeland of the Tibetan people. Also resident on the plateau are some other ethnic groups such as Monpa, Taman ...
. Many Himalayan peaks are sacred in
Hinduism Hinduism () is an Indian religion or '' dharma'', a religious and universal order or way of life by which followers abide. As a religion, it is the world's third-largest, with over 1.2–1.35 billion followers, or 15–16% of the global p ...
and
Buddhism Buddhism ( , ), also known as Buddha Dharma and Dharmavinaya (), is an Indian religions, Indian religion or Indian philosophy#Buddhist philosophy, philosophical tradition based on Pre-sectarian Buddhism, teachings attributed to the Buddha. ...
; the summits of several—
Kangchenjunga Kangchenjunga, also spelled Kanchenjunga, Kanchanjanghā (), and Khangchendzonga, is the third highest mountain in the world. Its summit lies at in a section of the Himalayas, the ''Kangchenjunga Himal'', which is bounded in the west by the ...
(from the Indian side), Gangkhar Puensum,
Machapuchare Machapuchare, Machhapuchchhre or Machhapuchhre (, Tamu: कतासुँ क्लिको), is a mountain situated in the Annapurna massif of Gandaki Province, north-central Nepal. Its highest peak has never been officially climbed due to ...
,
Nanda Devi Nanda Devi is the second-highest mountain in India, after Kangchenjunga, and the highest located entirely within the country (Kangchenjunga is on the border of India and Nepal). It is the 23rd-highest peak in the world. Nanda Devi was consi ...
and Kailas in the Tibetan Transhimalaya—are off-limits to climbers. Lifted by the subduction of the Indian tectonic plate under the
Eurasian Plate The Eurasian Plate is a tectonic plate that includes most of the continent of Eurasia (a landmass consisting of the traditional continents of Europe and Asia), with the notable exceptions of the Indian subcontinent, the Arabian subcontinent and ...
, the Himalayan mountain range runs west-northwest to east-southeast in an arc long. Its western anchor,
Nanga Parbat Nanga Parbat ( ur, ) (; ), known locally as Diamer () which means “king of the mountains”, is the ninth-highest mountain on Earth, its summit at above sea level. Lying immediately southeast of the northernmost bend of the Indus River in ...
, lies just south of the northernmost bend of the Indus river. Its eastern anchor, Namcha Barwa, lies immediately west of the great bend of the
Yarlung Tsangpo River The Yarlung Tsangpo, also called Yarlung Zangbo () is the upper stream of the Brahmaputra River located in the Tibet Autonomous Region, China. It is the longest river of Tibet and the fifth longest in China. The upper section is also called D ...
. The range varies in width from in the west to in the east.


Name

The name of the range hails from the
Sanskrit Sanskrit (; attributively , ; nominally , , ) is a classical language belonging to the Indo-Aryan branch of the Indo-European languages. It arose in South Asia after its predecessor languages had diffused there from the northwest in the late ...
( 'abode of the snow'), from ( 'snow') and ( 'home, dwelling'). They are now known as "", usually shortened to "the Himalayas". The mountains are known as the in Nepali and
Hindi Hindi ( Devanāgarī: or , ), or more precisely Modern Standard Hindi (Devanagari: ), is an Indo-Aryan language spoken chiefly in the Hindi Belt region encompassing parts of northern, central, eastern, and western India. Hindi has been ...
(both written ), ''Himāl'' (हिमाल) in Kumaoni, the ''Himalaya'' () or 'The Land of Snow' () in Tibetan, also known as in Sinhala written as , the ''Himāliya'' Mountain Range () in
Urdu Urdu (;"Urdu"
'' Bengali and the ''Ximalaya'' Mountain Range ( zh, s=喜马拉雅 山脉, p=Xǐmǎlāyǎ Shānmài, c=, t=喜馬拉雅 山脉) in Chinese. The name of the range is sometimes also given as
Himavan Himavat (Sanskrit: हिमवत्, lit. ''frosty'') is the personification of the Himalayan mountains in Hinduism. He is the guardian deity of the Himalayas, and finds mention in the epic ''Mahabharata'' and other Hindu scriptures. Nomencl ...
in older writings, including the Sanskrit epic
Mahabharata The ''Mahābhārata'' ( ; sa, महाभारतम्, ', ) is one of the two major Sanskrit literature, Sanskrit Indian epic poetry, epics of ancient India in Hinduism, the other being the ''Ramayana, Rāmāyaṇa''. It narrates the s ...
. Himavat (
Sanskrit Sanskrit (; attributively , ; nominally , , ) is a classical language belonging to the Indo-Aryan branch of the Indo-European languages. It arose in South Asia after its predecessor languages had diffused there from the northwest in the late ...
: हिमवत्'')'' or Himavan Himavān (
Sanskrit Sanskrit (; attributively , ; nominally , , ) is a classical language belonging to the Indo-Aryan branch of the Indo-European languages. It arose in South Asia after its predecessor languages had diffused there from the northwest in the late ...
: हिमवान्) is a Hindu deity who is the personification of the Himalayan Mountain Range. Other epithets include Himaraja (
Sanskrit Sanskrit (; attributively , ; nominally , , ) is a classical language belonging to the Indo-Aryan branch of the Indo-European languages. It arose in South Asia after its predecessor languages had diffused there from the northwest in the late ...
: हिमराज, ) or Parvateshwara (
Sanskrit Sanskrit (; attributively , ; nominally , , ) is a classical language belonging to the Indo-Aryan branch of the Indo-European languages. It arose in South Asia after its predecessor languages had diffused there from the northwest in the late ...
: पर्वतेश्वर, ). In western literature, some writers refer to it as ''the Himalaya''. This was also previously transcribed as ''Himmaleh'', as in
Emily Dickinson Emily Elizabeth Dickinson (December 10, 1830 – May 15, 1886) was an American poet. Little-known during her life, she has since been regarded as one of the most important figures in American poetry. Dickinson was born in Amherst, Massac ...
's poetry and Henry David Thoreau's essays.


Geography and key features

The Himalayas consist of parallel
mountain ranges A mountain range or hill range is a series of mountains or hills arranged in a line and connected by high ground. A mountain system or mountain belt is a group of mountain ranges with similarity in form, structure, and alignment that have arise ...
: the
Sivalik Hills The Sivalik Hills, also known as the Shivalik Hills and Churia Hills, are a mountain range of the outer Himalayas that stretches over about from the Indus River eastwards close to the Brahmaputra River, spanning the northern parts of the India ...
on the south; the Lower Himalayan Range; the Great Himalayas, which is the highest and central range; and the Tibetan Himalayas on the north. The Karakoram are generally considered separate from the Himalayas. In the middle of the great curve of the Himalayan mountains lie the peaks of
Dhaulagiri Dhaulagiri is the seventh highest mountain in the world at above sea level, and the highest mountain within the borders of a single country (Nepal). It was first climbed on 13 May 1960 by a Swiss-Austrian-Nepali expedition. Annapurna I () is ...
and
Annapurna Annapurna (; ne, अन्नपूर्ण) is a mountain situated in the Annapurna mountain range of Gandaki Province, north-central Nepal. It is the tenth highest mountain in the world at above sea level and is well known for the diffic ...
in
Nepal Nepal (; ne, :ne:नेपाल, नेपाल ), formerly the Federal Democratic Republic of Nepal ( ne, सङ्घीय लोकतान्त्रिक गणतन्त्र नेपाल ), is a landlocked country in S ...
, separated by the
Kali Gandaki Gorge The Kali Gandaki Gorge or Andha Galchi is the gorge of the Kali Gandaki (or Gandaki River) in the Himalayas in Nepal. By some sources, it may be one of the deepest gorges in the world. The upper part of the gorge is also called Thak Khola after ...
. The gorge splits the Himalayas into Western and Eastern sections both ecologically and orographically – the pass at the head of the Kali Gandaki the Kora La is the lowest point on the ridgeline between Everest and K2 (the highest peak of the Karakoram range). To the east of Annapurna are the peaks of
Manaslu Manaslu ( ne, मनास्लु, also known as Kutang; muh-NAA-slu) is the eighth-highest mountain in the world at above sea level. It is in the Mansiri Himal, part of the Nepalese Himalayas, in the west-central part of Nepal. The name Man ...
and across the border in Tibet,
Shishapangma Shishapangma, also called Gosainthān, is the 14th-highest mountain in the world, at above sea level. In 1964, it became the last of the 8,000-metre peaks to be climbed. This was due to its location entirely within Tibet and the restrictions ...
. To the south of these lies
Kathmandu , pushpin_map = Nepal Bagmati Province#Nepal#Asia , coordinates = , subdivision_type = Country , subdivision_name = , subdivision_type1 = Province , subdivision_name1 = Bagmati Prov ...
, the capital of Nepal and the largest city in the Himalayas. East of the Kathmandu Valley lies the valley of the Bhote/
Sun Kosi The Sunkoshi, also spelt Sunkosi, is a river of Nepal that is part of the Koshi or Saptkoshi River system in Nepal. Sunkoshi has two source streams, one that arises within Nepal in Choukati, and the other more significant stream that flows in ...
river which rises in Tibet and provides the main overland route between Nepal and China – the
Araniko Highway The Araniko Highway () connects Kathmandu with Kodari, northeast of the Kathmandu Valley, on the Nepal-China border. It is among the most dangerous of highways in Nepal due to extremely steep slopes on each side of the road from Barabise onwa ...
/
China National Highway 318 China National Highway 318 (G318) runs from Shanghai to Zhangmu on the China-Nepal border. It is the longest China National Highway at in length and runs west from Shanghai towards Zhejiang, Anhui, Hubei, Chongqing, Sichuan, and ends in Tibet Au ...
. Further east is the
Mahalangur Himal Mahālangūr Himāl ( ne, महालङ्गूर हिमाल, ''Mahālaṅgūra himāla'') is a section of the Himalayas in northeast Nepal and south-central Tibet of China extending east from the pass Nangpa La between Rolwaling Himal and ...
with four of the world's six highest mountains, including the highest: Cho Oyu,
Everest Mount Everest (; Tibetic languages, Tibetan: ''Chomolungma'' ; ) is List of highest mountains on Earth, Earth's highest mountain above sea level, located in the Mahalangur Himal sub-range of the Himalayas. The China–Nepal border ru ...
, Lhotse and
Makalu Makalu ( ne, मकालु हिमाल, Makālu himāl; zh, t=馬卡魯峰, p=Mǎkǎlǔ fēng) is the fifth highest mountain in the world at . It is located in the Mahalangur Himalayas southeast of Mount Everest, in Nepal. One of th ...
. The
Khumbu Khumbu (also known as the Everest Region) is a region of northeastern Nepal on the Nepalese side of Mount Everest. It is part of the Solukhumbu District, which in turn is part of Province No. 1.Bradley, Mayhew; "Trekking in the Nepal Himalaya"; ( ...
region, popular for trekking, is found here on the south-western approaches to Everest. The
Arun river The River Arun () is a river in the English county of West Sussex. At long, it is the longest river entirely in Sussex and one of the longest starting in Sussex after the River Medway, River Wey and River Mole. From the series of small stream ...
drains the northern slopes of these mountains, before turning south and flowing to the range to the east of Makalu. In the far east of Nepal, the Himalayas rise to the
Kangchenjunga Kangchenjunga, also spelled Kanchenjunga, Kanchanjanghā (), and Khangchendzonga, is the third highest mountain in the world. Its summit lies at in a section of the Himalayas, the ''Kangchenjunga Himal'', which is bounded in the west by the ...
massif on the border with India, the third highest mountain in the world, the most easterly summit and the highest point of India. The eastern side of Kangchenjunga is in the Indian state of
Sikkim Sikkim (; ) is a state in Northeastern India. It borders the Tibet Autonomous Region of China in the north and northeast, Bhutan in the east, Province No. 1 of Nepal in the west and West Bengal in the south. Sikkim is also close to the Silig ...
. Formerly an independent Kingdom, it lies on the main route from India to
Lhasa Lhasa (; Lhasa dialect: ; bo, text=ལྷ་ས, translation=Place of Gods) is the urban center of the prefecture-level Lhasa City and the administrative capital of Tibet Autonomous Region in Southwest China. The inner urban area of Lhas ...
, Tibet, which passes over the
Nathu La Nathu La (, ) is a mountain pass in the Dongkya Range of the Himalayas between China's Yadong County in Tibet, and the Indian states of Sikkim and West Bengal in Bengal, South Asia. The pass, at , connects the towns of Kalimpong and Gangtok to ...
pass into Tibet. East of Sikkim lies the ancient Buddhist Kingdom of
Bhutan Bhutan (; dz, འབྲུག་ཡུལ་, Druk Yul ), officially the Kingdom of Bhutan,), is a landlocked country in South Asia. It is situated in the Eastern Himalayas, between China in the north and India in the south. A mountainou ...
. The highest mountain in Bhutan is Gangkhar Puensum, which is also a strong candidate for the highest unclimbed mountain in the world. The Himalayas here are becoming increasingly rugged with heavily forested steep valleys. The Himalayas continue, turning slightly northeast, through the Indian State of
Arunachal Pradesh Arunachal Pradesh (, ) is a state in Northeastern India. It was formed from the erstwhile North-East Frontier Agency (NEFA) region, and became a state on 20 February 1987. It borders the states of Assam and Nagaland to the south. It shares ...
as well as Tibet, before reaching their easterly conclusion in the peak of
Namche Barwa Namcha Barwa or Namchabarwa (; Chinese: 南迦巴瓦峰, Pinyin: ''Nánjiābāwǎ Fēng'') is a mountain peak lying in Tibet in the region of Pemako. The traditional definition of the Himalaya extending from the Indus River to the Brahmaputra ...
, situated in Tibet inside the great bend of the Yarlang Tsangpo river. On the other side of the Tsangpo, to the east, are the
Kangri Garpo Kangri Karpo (), also spelt Gangri Garbo (), is a mountain range in eastern Tibet, located primarily in Nyingchi Prefecture as well as a portion of Qamdo Prefecture in the Tibet Autonomous Region, China. The mountain range lies to the east of the ...
mountains. The high mountains to the north of the Tsangpo including
Gyala Peri Gyala Peri ( Chinese: 加拉白垒, Pinyin: ''Jiālābáilěi'') is a peak just beyond the eastern end of the Himalayas at the entrance to Tsangpo gorge. It is part of Nyenchen Tanglha Shan, although it is sometimes included in Namcha Barwa Hi ...
, however, are also sometimes included in the Himalayas. Going west from Dhaulagiri, Western Nepal is somewhat remote and lacks major high mountains, but is home to
Rara Lake Rara Lake also known as Mahendra Lake is the largest fresh water lake in the Nepalese Himalayas. It is the main feature of Rara National Park, located in Jumla and Mugu Districts of Karnali Province. Rara National Park stretches over . History ...
, the largest lake in Nepal. The
Karnali River Karnali may refer to: Places in Nepal * Karnali Bridge, a bridge over the Karnali River in Nepal * Karnali Highway, a vital transport link in Nepal * Karnali Province, a federal province in Nepal * Karnali River, a river in Nepal and India origin ...
rises in Tibet but cuts through the centre of the region. Further west, the border with India follows the
Sarda River The Sharda River, also called Kali River and Mahakali River, originates at Kalapani in the Himalayas at an elevation of in the Pithoragarh district in Uttarakhand, India. It flows along Nepal's western border with India and has a basin area ...
and provides a trade route into China, where on the Tibetan plateau lies the high peak of Gurla Mandhata. Just across
Lake Manasarovar Lake Manasarovar (Sanskrit: मानसरोवर), also called Mapam Yutso (;) locally, is a high altitude freshwater lake fed by the Kailash Glaciers near Mount Kailash in Burang County, Ngari Prefecture, Tibet Autonomous Region, China. The ...
from this lies the sacred
Mount Kailash Mount Kailash (also Kailasa; ''Kangrinboqê'' or ''Gang Rinpoche''; Tibetan: གངས་རིན་པོ་ཆེ; ; sa, कैलास, ), is a mountain in the Ngari Prefecture, Tibet Autonomous Region of China. It has an altitude of ...
in the Kailash Ranges, which stands close to the source of the four main rivers of Himalayas and is revered in Hinduism, Buddhism, Sufism, Jainism, and Bonpo. In
Uttarakhand Uttarakhand ( , or ; , ), also known as Uttaranchal ( ; the official name until 2007), is a state in the northern part of India. It is often referred to as the "Devbhumi" (literally 'Land of the Gods') due to its religious significance and ...
, the Himalayas rise again as the Kumaon and Garhwal Himalayas with the high peaks of
Nanda Devi Nanda Devi is the second-highest mountain in India, after Kangchenjunga, and the highest located entirely within the country (Kangchenjunga is on the border of India and Nepal). It is the 23rd-highest peak in the world. Nanda Devi was consi ...
and
Kamet Kamet ( hi, कामेत) is the second highest mountain in the Garhwal region of Uttarakhand, India, after Nanda Devi. It lies in the Chamoli District of Uttarakhand. Its appearance resembles a giant pyramid topped by a flat summit area w ...
. The state is also home to the important pilgrimage destinations of Chaar Dhaam, with Gangotri, the source of the holy river
Ganges The Ganges ( ) (in India: Ganga ( ); in Bangladesh: Padma ( )). "The Ganges Basin, known in India as the Ganga and in Bangladesh as the Padma, is an international river to which India, Bangladesh, Nepal and China are the riparian states." is ...
, Yamunotri, the source of the river
Yamuna The Yamuna ( Hindustani: ), also spelt Jumna, is the second-largest tributary river of the Ganges by discharge and the longest tributary in India. Originating from the Yamunotri Glacier at a height of about on the southwestern slopes of B ...
, and the temples at
Badrinath Badrinath is a town and nagar panchayat in Chamoli district in the state of Uttarakhand, India. A Hindu holy place, it is one of the four sites in India's Char Dham pilgrimage and is also part of India's Chota Char Dham pilgrimage circuit. ...
and
Kedarnath Kedarnath is a town and Nagar Panchayat in Rudraprayag district of Uttarakhand, India, known primarily for the Kedarnath Temple. It is approximately 86 kilometres from Rudraprayag, the district headquarter. Kedarnath is the most remote of t ...
. Uttarakhand Himalayas are regionally divided into two, namely, Kumaon hills in
Kumaon division Kumaon (; Kumaoni: ''Kumāū''; ; historically romanized as KemāonJames Prinsep (Editor)John McClelland ) is a revenue and administrative division in the Indian State of Uttarakhand. It spans over the eastern half of the state and is bounde ...
and Garhwal hills in
Garhwal division Garhwal (IPA: /ɡəɽʋːɔɭ/) is one of the two administrative divisions of the Indian state of Uttarakhand. Lying in the Himalayas, it is bounded on the north by Tibet, on the east by Kumaon, on the south by Uttar Pradesh state, and on the ...
. The next Himalayan Indian state,
Himachal Pradesh Himachal Pradesh (; ; "Snow-laden Mountain Province") is a state in the northern part of India. Situated in the Western Himalayas, it is one of the thirteen mountain states and is characterized by an extreme landscape featuring several peaks ...
, is noted for its hill stations, particularly
Shimla Shimla (; ; also known as Simla, the official name until 1972) is the capital and the largest city of the northern Indian state of Himachal Pradesh. In 1864, Shimla was declared as the summer capital of British India. After independence, the ...
, the summer capital of the
British Raj The British Raj (; from Hindi ''rāj'': kingdom, realm, state, or empire) was the rule of the British Crown on the Indian subcontinent; * * it is also called Crown rule in India, * * * * or Direct rule in India, * Quote: "Mill, who was him ...
, and Dharamsala, the centre of the Tibetan community and
government in exile A government in exile (abbreviated as GiE) is a political group that claims to be a country or semi-sovereign state's legitimate government, but is unable to exercise legal power and instead resides in a foreign country. Governments in exile ...
in India. This area marks the start of the Punjab Himalaya and the Sutlej river, the most easterly of the five tributaries of the Indus, cuts through the range here. Further west, the Himalayas form much of the disputed Indian-administered union territory of Jammu and Kashmir where lies the renowned Kashmir Valley and the town and lakes of Srinagar. The Himalayas form most of the south-west portion of the disputed Indian-administered union territory of
Ladakh Ladakh () is a region administered by India as a union territory which constitutes a part of the larger Kashmir region and has been the subject of dispute between India, Pakistan, and China since 1947. (subscription required) Quote: "Jammu ...
. The twin peaks of Nun Kun are the only mountains over in this part of the Himalayas. Finally, the Himalayas reach their western end in the dramatic 8000 m peak of
Nanga Parbat Nanga Parbat ( ur, ) (; ), known locally as Diamer () which means “king of the mountains”, is the ninth-highest mountain on Earth, its summit at above sea level. Lying immediately southeast of the northernmost bend of the Indus River in ...
, which rises over above the Indus valley and is the most westerly of the 8000 m summits. The western end terminates at a magnificent point near Nanga Parbat where the Himalayas intersect with the Karakoram and
Hindu Kush The Hindu Kush is an mountain range in Central and South Asia to the west of the Himalayas. It stretches from central and western Afghanistan, Quote: "The Hindu Kush mountains run along the Afghan border with the North-West Frontier Province ...
ranges, in the disputed Pakistani-administered territory of Gilgit-Baltistan. Some portion of the Himalayas, such as the
Kaghan Valley The Kaghan Valley ( ur, ) is an alpine valley located in the Mansehra District of Khyber Pakhtunkhwa, Pakistan. The valley covers a distance of across northern Pakistan, rising from its lowest elevation of to its highest point at the Babusa ...
,
Margalla Hills The Margalla Hills () are a hill range within the Margalla Hills National Park on the northern edge of Islamabad Capital Territory, Pakistan, just south of Haripur District, Khyber Pakhtunkhwa. They are part of the Himalayan foothills. Th ...
and Galyat tract, extend into the Pakistani provinces of
Khyber Pakhtunkhwa Khyber Pakhtunkhwa (; ps, خېبر پښتونخوا; Urdu, Hindko: خیبر پختونخوا) commonly abbreviated as KP or KPK, is one of the Administrative units of Pakistan, four provinces of Pakistan. Located in the Geography of Pakistan, ...
and
Punjab Punjab (; Punjabi: پنجاب ; ਪੰਜਾਬ ; ; also romanised as ''Panjāb'' or ''Panj-Āb'') is a geopolitical, cultural, and historical region in South Asia, specifically in the northern part of the Indian subcontinent, comprising a ...
.


Geology

The Himalayan range is one of the youngest mountain ranges on the planet and consists mostly of uplifted
sedimentary Sedimentary rocks are types of rock that are formed by the accumulation or deposition of mineral or organic particles at Earth's surface, followed by cementation. Sedimentation is the collective name for processes that cause these particles ...
and
metamorphic rock Metamorphic rocks arise from the transformation of existing rock to new types of rock in a process called metamorphism. The original rock ( protolith) is subjected to temperatures greater than and, often, elevated pressure of or more, caus ...
. According to the modern theory of
plate tectonics Plate tectonics (from the la, label=Late Latin, tectonicus, from the grc, τεκτονικός, lit=pertaining to building) is the generally accepted scientific theory that considers the Earth's lithosphere to comprise a number of large ...
, its formation is a result of a continental collision or orogeny along the
convergent boundary A convergent boundary (also known as a destructive boundary) is an area on Earth where two or more lithospheric plates collide. One plate eventually slides beneath the other, a process known as subduction. The subduction zone can be defined by a ...
(
Main Himalayan Thrust The Main Himalayan Thrust (MHT) is a décollement under the Himalaya Range. This thrust fault follows a NW-SE strike, reminiscent of an arc, and gently dip towards the north, beneath the region. It is the largest active continental megathrust ...
) between the Indo-Australian Plate and the
Eurasian Plate The Eurasian Plate is a tectonic plate that includes most of the continent of Eurasia (a landmass consisting of the traditional continents of Europe and Asia), with the notable exceptions of the Indian subcontinent, the Arabian subcontinent and ...
. The Arakan Yoma highlands in
Myanmar Myanmar, ; UK pronunciations: US pronunciations incl. . Note: Wikipedia's IPA conventions require indicating /r/ even in British English although only some British English speakers pronounce r at the end of syllables. As John Wells explai ...
and the
Andaman and Nicobar Islands The Andaman and Nicobar Islands is a union territory of India consisting of 572 islands, of which 37 are inhabited, at the junction of the Bay of Bengal and the Andaman Sea. The territory is about north of Aceh in Indonesia and separated f ...
in the
Bay of Bengal The Bay of Bengal is the northeastern part of the Indian Ocean, bounded on the west and northwest by India, on the north by Bangladesh, and on the east by Myanmar and the Andaman and Nicobar Islands of India. Its southern limit is a line betwee ...
were also formed as a result of this collision. During the Upper Cretaceous, about 70 million years ago, the north-moving Indo-Australian Plate (which has subsequently broken into the
Indian Plate The Indian Plate (or India Plate) is a minor tectonic plate straddling the equator in the Eastern Hemisphere. Originally a part of the ancient continent of Gondwana, the Indian Plate broke away from the other fragments of Gondwana , began ...
and the
Australian Plate The Australian Plate is a major tectonic plate in the eastern and, largely, southern hemispheres. Originally a part of the ancient continent of Gondwana, Australia remained connected to India and Antarctica until approximately when India broke ...
) was moving at about per year. About 50 million years ago this fast-moving Indo-Australian Plate had completely closed the
Tethys Ocean The Tethys Ocean ( el, Τηθύς ''Tēthús''), also called the Tethys Sea or the Neo-Tethys, was a prehistoric ocean that covered most of the Earth during much of the Mesozoic Era and early Cenozoic Era, located between the ancient continents ...
, the existence of which has been determined by
sedimentary rock Sedimentary rocks are types of rock that are formed by the accumulation or deposition of mineral or organic particles at Earth's surface, followed by cementation. Sedimentation is the collective name for processes that cause these particles ...
s settled on the ocean floor and the volcanoes that fringed its edges. Since both plates were composed of low density
continental crust Continental crust is the layer of igneous, sedimentary, and metamorphic rocks that forms the geological continents and the areas of shallow seabed close to their shores, known as continental shelves. This layer is sometimes called '' sial'' be ...
, they were thrust faulted and folded into mountain ranges rather than subducting into the mantle along an
oceanic trench Oceanic trenches are prominent long, narrow topographic depressions of the ocean floor. They are typically wide and below the level of the surrounding oceanic floor, but can be thousands of kilometers in length. There are about of oceanic tren ...
. An often-cited fact used to illustrate this process is that the summit of Mount Everest is made of marine
limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...
from this ancient ocean. Today, the Indian plate continues to be driven horizontally at the Tibetan Plateau, which forces the plateau to continue to move upwards. The Indian plate is still moving at 67 mm per year, and over the next 10 million years it will travel about into Asia. About 20 mm per year of the India-Asia convergence is absorbed by thrusting along the Himalaya southern front. This leads to the Himalayas rising by about 5 mm per year, making them geologically active. The movement of the Indian plate into the Asian plate also makes this region
seismic Seismology (; from Ancient Greek σεισμός (''seismós'') meaning "earthquake" and -λογία (''-logía'') meaning "study of") is the scientific study of earthquakes and the propagation of elastic waves through the Earth or through other ...
ally active, leading to earthquakes from time to time. During the last
ice age An ice age is a long period of reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages and gre ...
, there was a connected ice stream of
glacier A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires distinguishing features, such as ...
s between
Kangchenjunga Kangchenjunga, also spelled Kanchenjunga, Kanchanjanghā (), and Khangchendzonga, is the third highest mountain in the world. Its summit lies at in a section of the Himalayas, the ''Kangchenjunga Himal'', which is bounded in the west by the ...
in the east and
Nanga Parbat Nanga Parbat ( ur, ) (; ), known locally as Diamer () which means “king of the mountains”, is the ninth-highest mountain on Earth, its summit at above sea level. Lying immediately southeast of the northernmost bend of the Indus River in ...
in the west. In the west, the glaciers joined with the ice stream network in the Karakoram, and in the north, they joined with the former Tibetan inland ice. To the south, outflow glaciers came to an end below an elevation of . While the current valley glaciers of the Himalaya reach at most in length, several of the main valley glaciers were long during the ice age. The glacier snowline (the altitude where accumulation and ablation of a glacier are balanced) was about lower than it is today. Thus, the climate was at least colder than it is today.


Hydrology

Despite their scale, the Himalayas do not form a major watershed, and a number of rivers cut through the range, particularly in the eastern part of the range. As a result, the main ridge of the Himalayas is not clearly defined, and mountain passes are not as significant for traversing the range as with other mountain ranges. The rivers of the Himalayas drain into two large river systems: * The western rivers combine into the ''Indus Basin''. The Indus itself forms the northern and western boundaries of the Himalayas. It begins in Tibet at the confluence of Sengge and Gar rivers and flows north-west through India into Pakistan before turning south-west to the
Arabian Sea The Arabian Sea ( ar, اَلْبَحرْ ٱلْعَرَبِيُّ, Al-Bahr al-ˁArabī) is a region of the northern Indian Ocean bounded on the north by Pakistan, Iran and the Gulf of Oman, on the west by the Gulf of Aden, Guardafui Channel ...
. It is fed by several major tributaries draining the southern slopes of the Himalayas, including the Jhelum,
Chenab The Chenab River () is a major river that flows in India and Pakistan, and is one of the 5 major rivers of the Punjab region. It is formed by the union of two headwaters, Chandra and Bhaga, which rise in the upper Himalayas in the Lahaul ...
, Ravi,
Beas Beas is a riverfront town in the Amritsar district of the Indian state of Punjab. Beas lies on the banks of the Beas River. Beas town is mostly located in revenue boundary of Budha Theh with parts in villages Dholo Nangal and Wazir Bhullar. ...
and Sutlej rivers, the five rivers of the
Punjab Punjab (; Punjabi: پنجاب ; ਪੰਜਾਬ ; ; also romanised as ''Panjāb'' or ''Panj-Āb'') is a geopolitical, cultural, and historical region in South Asia, specifically in the northern part of the Indian subcontinent, comprising a ...
. * The other Himalayan rivers drain the ''Ganges-Brahmaputra Basin''. Its main rivers are the
Ganges The Ganges ( ) (in India: Ganga ( ); in Bangladesh: Padma ( )). "The Ganges Basin, known in India as the Ganga and in Bangladesh as the Padma, is an international river to which India, Bangladesh, Nepal and China are the riparian states." is ...
, the Brahmaputra and the
Yamuna The Yamuna ( Hindustani: ), also spelt Jumna, is the second-largest tributary river of the Ganges by discharge and the longest tributary in India. Originating from the Yamunotri Glacier at a height of about on the southwestern slopes of B ...
, as well as other tributaries. The Brahmaputra originates as the
Yarlung Tsangpo River The Yarlung Tsangpo, also called Yarlung Zangbo () is the upper stream of the Brahmaputra River located in the Tibet Autonomous Region, China. It is the longest river of Tibet and the fifth longest in China. The upper section is also called D ...
in western Tibet, and flows east through Tibet and west through the plains of
Assam Assam (; ) is a state in northeastern India, south of the eastern Himalayas along the Brahmaputra and Barak River valleys. Assam covers an area of . The state is bordered by Bhutan and Arunachal Pradesh to the north; Nagaland and Manipur ...
. The Ganges and the Brahmaputra meet in
Bangladesh Bangladesh (}, ), officially the People's Republic of Bangladesh, is a country in South Asia. It is the eighth-most populous country in the world, with a population exceeding 165 million people in an area of . Bangladesh is among the mos ...
and drain into the
Bay of Bengal The Bay of Bengal is the northeastern part of the Indian Ocean, bounded on the west and northwest by India, on the north by Bangladesh, and on the east by Myanmar and the Andaman and Nicobar Islands of India. Its southern limit is a line betwee ...
through the world's largest river delta, the Sunderbans. The northern slopes of
Gyala Peri Gyala Peri ( Chinese: 加拉白垒, Pinyin: ''Jiālābáilěi'') is a peak just beyond the eastern end of the Himalayas at the entrance to Tsangpo gorge. It is part of Nyenchen Tanglha Shan, although it is sometimes included in Namcha Barwa Hi ...
and the peaks beyond the Tsangpo, sometimes included in the Himalayas, drain into the Irrawaddy River, which originates in eastern Tibet and flows south through Myanmar to drain into the Andaman Sea. The Salween,
Mekong The Mekong or Mekong River is a trans-boundary river in East Asia and Southeast Asia. It is the world's twelfth longest river and the third longest in Asia. Its estimated length is , and it drains an area of , discharging of water annual ...
,
Yangtze The Yangtze or Yangzi ( or ; ) is the longest river in Asia, the third-longest in the world, and the longest in the world to flow entirely within one country. It rises at Jari Hill in the Tanggula Mountains (Tibetan Plateau) and flows ...
and
Yellow River The Yellow River or Huang He (Chinese: , Mandarin: ''Huáng hé'' ) is the second-longest river in China, after the Yangtze River, and the sixth-longest river system in the world at the estimated length of . Originating in the Bayan Ha ...
all originate from parts of the Tibetan Plateau that are geologically distinct from the Himalaya mountains and are therefore not considered true Himalayan rivers. Some geologists refer to all the rivers collectively as the ''circum-Himalayan rivers''.


Glaciers

The great ranges of central Asia, including the Himalayas, contain the third-largest deposit of ice and snow in the world, after
Antarctica Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean, it contains the geographic South Pole. Antarctica is the fifth-largest cont ...
and the
Arctic The Arctic ( or ) is a polar region located at the northernmost part of Earth. The Arctic consists of the Arctic Ocean, adjacent seas, and parts of Canada (Yukon, Northwest Territories, Nunavut), Danish Realm (Greenland), Finland, Iceland, N ...
. The Himalayan range encompasses about 15,000 glaciers, which store about of fresh water. Its glaciers include the Gangotri and Yamunotri (
Uttarakhand Uttarakhand ( , or ; , ), also known as Uttaranchal ( ; the official name until 2007), is a state in the northern part of India. It is often referred to as the "Devbhumi" (literally 'Land of the Gods') due to its religious significance and ...
) and
Khumbu Khumbu (also known as the Everest Region) is a region of northeastern Nepal on the Nepalese side of Mount Everest. It is part of the Solukhumbu District, which in turn is part of Province No. 1.Bradley, Mayhew; "Trekking in the Nepal Himalaya"; ( ...
glaciers (
Mount Everest Mount Everest (; Tibetic languages, Tibetan: ''Chomolungma'' ; ) is List of highest mountains on Earth, Earth's highest mountain above sea level, located in the Mahalangur Himal sub-range of the Himalayas. The China–Nepal border ru ...
region), Langtang glacier ( Langtang region) and Zemu (
Sikkim Sikkim (; ) is a state in Northeastern India. It borders the Tibet Autonomous Region of China in the north and northeast, Bhutan in the east, Province No. 1 of Nepal in the west and West Bengal in the south. Sikkim is also close to the Silig ...
). Owing to the mountains' latitude near the
Tropic of Cancer The Tropic of Cancer, which is also referred to as the Northern Tropic, is the most northerly circle of latitude on Earth at which the Sun can be directly overhead. This occurs on the June solstice, when the Northern Hemisphere is tilted tow ...
, the permanent snow line is among the highest in the world at typically around . In contrast, equatorial mountains in
New Guinea New Guinea (; Hiri Motu: ''Niu Gini''; id, Papua, or , historically ) is the world's second-largest island with an area of . Located in Oceania in the southwestern Pacific Ocean, the island is separated from Australia by the wide Torr ...
, the Rwenzoris and Colombia have a snow line some lower. The higher regions of the Himalayas are snowbound throughout the year, in spite of their proximity to the tropics, and they form the sources of several large perennial rivers. In recent years, scientists have monitored a notable increase in the rate of
glacier retreat The retreat of glaciers since 1850 affects the availability of fresh water for irrigation and domestic use, mountain recreation, animals and plants that depend on glacier-melt, and, in the longer term, the level of the oceans. Deglaciation occur ...
across the region as a result of climate change. For example, glacial lakes have been forming rapidly on the surface of debris-covered glaciers in the Bhutan Himalaya during the last few decades. Although the effect of this will not be known for many years, it potentially could mean disaster for the hundreds of millions of people who rely on the glaciers to feed the rivers during the dry seasons. The global climate change will affect the water resources and livelihoods of the Greater Himalayan region.


Lakes

The Himalayan region is dotted with hundreds of lakes.
Pangong Tso Pangong Tso or Pangong Lake (; ; hi, text=पैंगोंग झील) is an endorheic lake spanning eastern Ladakh and West Tibet situated at an elevation of . It is long and divided into five sublakes, called ''Pangong Tso'', ''Tso N ...
, which is spread across the border between India and China, at far western end of Tibet, is among the largest with surface areas of . South of the main range, the lakes are smaller. Tilicho Lake in Nepal in the Annapurna massif is one of the highest lakes in the world. Other notable lakes include
Rara Lake Rara Lake also known as Mahendra Lake is the largest fresh water lake in the Nepalese Himalayas. It is the main feature of Rara National Park, located in Jumla and Mugu Districts of Karnali Province. Rara National Park stretches over . History ...
in western Nepal, She-Phoksundo Lake in the Shey Phoksundo National Park of Nepal, Gurudongmar Lake, in North Sikkim, Gokyo Lakes in Solukhumbu district of
Nepal Nepal (; ne, :ne:नेपाल, नेपाल ), formerly the Federal Democratic Republic of Nepal ( ne, सङ्घीय लोकतान्त्रिक गणतन्त्र नेपाल ), is a landlocked country in S ...
and Lake Tsongmo, near the Indo-China border in Sikkim. Some of the lakes present a danger of a
glacial lake outburst flood A glacial lake outburst flood (GLOF) is a type of outburst flood caused by the failure of a dam containing a glacial lake. An event similar to a GLOF, where a body of water contained by a glacier melts or overflows the glacier, is called a j ...
. The Tsho Rolpa glacier lake in the Rowaling Valley, in the
Dolakha District Dolakha, often known as Dolkha or Dholkha (Nepal Bhasa:दोलखा जिल्ला)), a part of Bagmati Province, is one of the seventy-seven districts of Nepal. The district, with Charikot as its district headquarters, covers an area of a ...
of Nepal, is rated as the most dangerous. The lake, which is located at an altitude of has grown considerably over the last 50 years due to glacial melting. The mountain lakes are known to geographers as ''
tarns A tarn (or corrie loch) is a proglacial mountain lake, pond or pool, formed in a cirque excavated by a glacier. A moraine may form a natural dam below a tarn. Etymology The word is derived from the Old Norse word ''tjörn'' ("a small mount ...
'' if they are caused by glacial activity. Tarns are found mostly in the upper reaches of the Himalaya, above . Temperate Himalayan wetlands provide important habitat and layover sites for migratory birds. Many mid and low altitude lakes remain poorly studied in terms of their hydrology and biodiversity, like Khecheopalri in the Sikkim Eastern Himalayas.


Climate


Temperature

The physical factors determining the climate in any location in the Himalayas include latitude, altitude, and the relative motion of the
Southwest monsoon A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal oscill ...
. From south to north, the mountains cover more than eight degrees of latitude, spanning temperate to subtropical zones. The colder air of Central Asia is prevented from blowing down into South Asia by the physical configuration of the Himalayas. This causes the tropical zone to extend farther north in South Asia than anywhere else in the world. The evidence is unmistakable in the Brahmaputra valley as the warm air from the
Bay of Bengal The Bay of Bengal is the northeastern part of the Indian Ocean, bounded on the west and northwest by India, on the north by Bangladesh, and on the east by Myanmar and the Andaman and Nicobar Islands of India. Its southern limit is a line betwee ...
bottlenecks and rushes up past Namcha Barwa, the eastern anchor of the Himalayas, and into southeastern Tibet. Temperatures in the Himalayas cool by 2.0 degrees C (3.6 degrees F) for every increase of altitude. As the physical features of mountains are irregular, with broken jagged contours, there can be wide variations in temperature over short distances. Temperature at a location on a mountain depends on the season of the year, the bearing of the sun with respect to the face on which the location lies, and the
mass Mass is an intrinsic property of a body. It was traditionally believed to be related to the quantity of matter in a physical body, until the discovery of the atom and particle physics. It was found that different atoms and different eleme ...
of the mountain, i.e. the amount of
matter In classical physics and general chemistry, matter is any substance that has mass and takes up space by having volume. All everyday objects that can be touched are ultimately composed of atoms, which are made up of interacting subatomic part ...
in the mountain. As the temperature is directly proportional to received radiation from the sun, the faces that receive more direct sunlight also have a greater heat buildup. In narrow valleys—lying between steep mountain faces—there can be dramatically different weather along their two margins. The side to the north with a mountain above facing south can have an extra month of the growing season. The mass of the mountain also influences the temperature, as it acts as a
heat island An urban heat island (UHI) is an urban or metropolitan area that is significantly warmer than its surrounding rural areas due to human activities. The temperature difference is usually larger at night than during the day, and is most apparent ...
, in which more heat is absorbed and retained than the surroundings, and therefore influences the
heat budget Earth's energy budget accounts for the balance between the energy that Earth receives from the Sun and the energy the Earth loses back into outer space. Smaller energy sources, such as Earth's internal heat, are taken into consideration, but ma ...
or the amount of heat needed to raise the temperature from the winter minimum winter to the summer maximum. The immense scale of the Himalayas means that many summits can create their own weather, the temperature fluctuating from one summit to another, from one face to another, and all may be quite different from the weather in nearby plateaus or valleys.


Precipitation

A critical influence on the Himalayan climate is the
Southwest Monsoon A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal oscill ...
. This is not so much the rain of the summer months as the wind that carries the rain. Different rates of heating and cooling between the Central Asian continent and the South Asian ocean create large differences in the
atmospheric pressure Atmospheric pressure, also known as barometric pressure (after the barometer), is the pressure within the atmosphere of Earth. The standard atmosphere (symbol: atm) is a unit of pressure defined as , which is equivalent to 1013.25 millibars, ...
prevailing above each. In the winter, a high-pressure system forms and remains suspended above Central Asia, forcing air to flow in the southerly direction over the Himalayas. But in Central Asia as there is no substantial source for water to be diffused as vapour, the winter winds blowing across South Asia are dry. In the summer months the Central Asian plateau heats up more than the ocean waters to its south. As a result, the air above it rises higher and higher, creating a zone of low pressure. Off-shore high-pressure systems in the Indian Ocean push the moist summer air inland toward the low-pressure system. When the moist air meets mountains, it rises and upon subsequent cooling, its moisture condenses and is released as rain, typically heavy rain. The wet summer monsoon winds cause precipitation in India and all along the layered southern slopes of the Himalayas. This forced lifting of air is called the orographic effect.


Winds

The vast size, huge altitude range, and complex topography of the Himalayas mean they experience a wide range of climates, from humid subtropical in the foothills to cold and dry desert conditions on the Tibetan side of the range. For much of the Himalayas—in the areas to the south of the high mountains, the
monsoon A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal osci ...
is the most characteristic feature of the climate and causes most of the precipitation, while the western disturbance brings winter precipitation, especially in the west. Heavy rain arrives on the southwest monsoon in June and persists until September. The monsoon can seriously impact transport and cause major landslides. It restricts tourism – the trekking and mountaineering season is limited to either before the monsoon in April/May or after the monsoon in October/November (autumn). In Nepal and Sikkim, there are often considered to be five seasons: summer,
monsoon A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal osci ...
, autumn, (or post-monsoon), winter, and spring. Using the
Köppen climate classification The Köppen climate classification is one of the most widely used climate classification systems. It was first published by German-Russian climatologist Wladimir Köppen (1846–1940) in 1884, with several later modifications by Köppen, notabl ...
, the lower elevations of the Himalayas, reaching in mid-elevations in central Nepal (including the Kathmandu valley), are classified as ''Cwa'', Humid subtropical climate with dry winters. Higher up, most of the Himalayas have a subtropical highland climate (''Cwb''). The intensity of the southwest monsoon diminishes as it moves westward along the range, with as much as of rainfall in the monsoon season in Darjeeling in the east, compared to only during the same period in Shimla in the west. The northern side of the Himalayas, also known as the Tibetan Himalaya, is dry, cold and, generally, windswept particularly in the west where it has a
cold desert climate The desert climate or arid climate (in the Köppen climate classification ''BWh'' and ''BWk''), is a dry climate sub-type in which there is a severe excess of evaporation over precipitation. The typically bald, rocky, or sandy surfaces in desert ...
. The vegetation is sparse and stunted and the winters are severely cold. Most of the precipitation in the region is in the form of snow during the late winter and spring months. Local impacts on climate are significant throughout the Himalayas. Temperatures fall by 0.2 to 1.2 °C for every rise in altitude. This gives rise to a variety of climates from a nearly tropical climate in the foothills, to
tundra In physical geography, tundra () is a type of biome where tree growth is hindered by frigid temperatures and short growing seasons. The term ''tundra'' comes through Russian (') from the Kildin Sámi word (') meaning "uplands", "treeless mou ...
and permanent snow and ice at higher elevations. Local climate is also affected by the topography: The leeward side of the mountains receive less rain while the well exposed slopes get heavy rainfall and the rain shadow of large mountains can be significant, for example leading to near desert conditions in the Upper Mustang which is sheltered from the monsoon rains by the
Annapurna Annapurna (; ne, अन्नपूर्ण) is a mountain situated in the Annapurna mountain range of Gandaki Province, north-central Nepal. It is the tenth highest mountain in the world at above sea level and is well known for the diffic ...
and
Dhaulagiri Dhaulagiri is the seventh highest mountain in the world at above sea level, and the highest mountain within the borders of a single country (Nepal). It was first climbed on 13 May 1960 by a Swiss-Austrian-Nepali expedition. Annapurna I () is ...
massifs and has annual precipitation of around , while Pokhara on the southern side of the massifs has substantial rainfall ( a year). Thus although annual precipitation is generally higher in east than the west, local variations are often more important. The Himalayas have a profound effect on the climate of the
Indian subcontinent The Indian subcontinent is a list of the physiographic regions of the world, physiographical region in United Nations geoscheme for Asia#Southern Asia, Southern Asia. It is situated on the Indian Plate, projecting southwards into the Indian O ...
and the Tibetan Plateau. They prevent frigid, dry winds from blowing south into the subcontinent, which keeps South Asia much warmer than corresponding
temperate In geography, the temperate climates of Earth occur in the middle latitudes (23.5° to 66.5° N/S of Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout ...
regions in the other continents. It also forms a barrier for the
monsoon A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal osci ...
winds, keeping them from traveling northwards, and causing heavy rainfall in the Terai region. The Himalayas are also believed to play an important part in the formation of Central Asian deserts, such as the Taklamakan and Gobi.


Climate change


Ecology

The flora and fauna of the Himalayas vary with climate, rainfall, altitude, and soils. The climate ranges from tropical at the base of the mountains to permanent ice and snow at the highest elevations. The amount of yearly rainfall increases from west to east along the southern front of the range. This diversity of altitude, rainfall, and soil conditions combined with the very high snow line supports a variety of distinct plant and animal communities. The extremes of high altitude (low atmospheric pressure) combined with extreme cold favor
extremophile An extremophile (from Latin ' meaning "extreme" and Greek ' () meaning "love") is an organism that is able to live (or in some cases thrive) in extreme environments, i.e. environments that make survival challenging such as due to extreme temper ...
organisms. At high altitudes, the elusive and previously endangered
snow leopard The snow leopard (''Panthera uncia''), also known as the ounce, is a felid in the genus '' Panthera'' native to the mountain ranges of Central and South Asia. It is listed as Vulnerable on the IUCN Red List because the global population is es ...
is the main predator. Its prey includes members of the goat family grazing on the alpine pastures and living on the rocky terrain, notably the endemic
bharal The bharal (''Pseudois nayaur''), also called the blue sheep, is a caprine native to the high Himalayas. It is the only member of the genus ''Pseudois.'' It occurs in India, Bhutan, China (in Gansu, Ningxia, Sichuan, Tibet, and Inner Mongolia), ...
or Himalayan blue sheep. The
Himalayan musk deer The white-bellied musk deer or Himalayan musk deer (''Moschus leucogaster'') is a musk deer species occurring in the Himalayas of Nepal, Bhutan, India, Pakistan and China. It is listed as endangered on the IUCN Red List because of overexploitatio ...
is also found at high altitudes. Hunted for its musk, it is now rare and endangered. Other endemic or near-endemic herbivores include the
Himalayan tahr The Himalayan tahr (''Hemitragus jemlahicus'') is a large even-toed ungulate native to the Himalayas in southern Tibet, northern India, western Bhutan and Nepal. It is listed as Near Threatened on the IUCN Red List, as the population is declini ...
, the
takin The takin (''Budorcas taxicolor''; ), also called cattle chamois or gnu goat, is a large species of ungulate of the subfamily Caprinae found in the eastern Himalayas. It includes four subspecies: the Mishmi takin (''B. t. taxicolor''), the g ...
, the
Himalayan serow The Himalayan serow (''Capricornis sumatraensis thar''), also known as the thar ( , ), is a subspecies of the mainland serow native to the Himalayas. It was previously considered its own species, as ''Capricornis thar''. It is the official state ...
, and the
Himalayan goral The Himalayan goral (''Naemorhedus goral'') or the gray goral, is a bovid species native to the Himalayas. It is listed as Near Threatened on the IUCN Red List because the population is thought to be declining significantly due to habitat loss an ...
. The critically endangered Himalayan subspecies of the brown bear is found sporadically across the range as is the Asian black bear. In the mountainous mixed deciduous and conifer forests of the eastern Himalayas,
Red panda The red panda (''Ailurus fulgens''), also known as the lesser panda, is a small mammal native to the eastern Himalayas and southwestern China. It has dense reddish-brown fur with a black belly and legs, white-lined ears, a mostly white muzzle ...
feed in the dense understories of bamboo. Lower down the forests of the foothills are inhabited by several different primates, including the endangered
Gee's golden langur Gee's golden langur (''Trachypithecus geei''), also known as simply the golden langur, is an Old World monkey found in a small region of Western Assam, India and in the neighboring foothills of the Black Mountains of Bhutan. Long considered sac ...
and the Kashmir gray langur, with highly restricted ranges in the east and west of the Himalayas respectively. The unique floral and faunal wealth of the Himalayas is undergoing structural and compositional changes due to
climate change In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to ...
. '' Hydrangea hirta'' is an example of floral species that can be found in this area. The increase in temperature is shifting various species to higher elevations. The oak forest is being invaded by pine forests in the Garhwal Himalayan region. There are reports of early flowering and fruiting in some tree species, especially rhododendron, apple and '' box myrtle''. The highest known tree species in the Himalayas is '' Juniperus tibetica'' located at in Southeastern Tibet.


Religions

There are many cultural and mythological aspects associated with the Himalayas. In
Jainism Jainism ( ), also known as Jain Dharma, is an Indian religion. Jainism traces its spiritual ideas and history through the succession of twenty-four tirthankaras (supreme preachers of ''Dharma''), with the first in the current time cycle bein ...
, Mount Ashtapad of the Himalayan mountain range, is a sacred place where the first Jain
Tirthankara In Jainism, a ''Tirthankara'' (Sanskrit: '; English: literally a ' ford-maker') is a saviour and spiritual teacher of the '' dharma'' (righteous path). The word ''tirthankara'' signifies the founder of a '' tirtha'', which is a fordable pass ...
, Rishabhdeva attained
moksha ''Moksha'' (; sa, मोक्ष, '), also called ''vimoksha'', ''vimukti'' and ''mukti'', is a term in Hinduism, Buddhism, Jainism and Sikhism for various forms of emancipation, enlightenment, liberation, and release. In its soteriologic ...
. It is believed that after Rishabhdeva attained '' nirvana'', his son, Emperor Bharata Chakravartin, had constructed three stupas and twenty four shrines of the 24
Tirthankaras In Jainism, a ''Tirthankara'' ( Sanskrit: '; English: literally a 'ford-maker') is a saviour and spiritual teacher of the '' dharma'' (righteous path). The word ''tirthankara'' signifies the founder of a '' tirtha'', which is a fordable pas ...
with their idols studded with precious stones over there and named it ''Sinhnishdha''. For the Hindus, the Himalayas are personified as Himavat, king of all mountains and the father of the goddess
Parvati Parvati ( sa, पार्वती, ), Uma ( sa, उमा, ) or Gauri ( sa, गौरी, ) is the Hindu goddess of power, energy, nourishment, harmony, love, beauty, devotion, and motherhood. She is a physical representation of Mahadevi i ...
. The Himalayas are also considered to be the father of Ganga (the personification of river Ganges). Two of the most sacred places of pilgrimage for the Hindus are the temple complex in Pashupatinath and
Muktinath Muktinath is a Vishnu temple, sacred to both Hindus and Buddhists. It is located in Muktinath Valley at the foot of the Thorong La mountain pass in Mustang, Nepal. It is one of the world's highest temples (altitude 3,800 m). Within Hinduism, it ...
, also known as Saligrama because of the presence of the sacred black rocks called saligrams. The Buddhists also lay a great deal of importance on the Himalayas. Paro Taktsang is the holy place where
Buddhism Buddhism ( , ), also known as Buddha Dharma and Dharmavinaya (), is an Indian religions, Indian religion or Indian philosophy#Buddhist philosophy, philosophical tradition based on Pre-sectarian Buddhism, teachings attributed to the Buddha. ...
started in
Bhutan Bhutan (; dz, འབྲུག་ཡུལ་, Druk Yul ), officially the Kingdom of Bhutan,), is a landlocked country in South Asia. It is situated in the Eastern Himalayas, between China in the north and India in the south. A mountainou ...
. The Muktinath is also a place of pilgrimage for the Tibetan Buddhists. They believe that the trees in the poplar grove came from the walking sticks of eighty-four ancient Indian Buddhist magicians or ''mahasiddhas''. They consider the saligrams to be representatives of the Tibetan serpent deity known as Gawo Jagpa. The Himalayan people's diversity shows in many different ways. It shows through their architecture, their languages, and dialects, their beliefs and rituals, as well as their clothing. The shapes and materials of the people's homes reflect their practical needs and beliefs. Another example of the diversity amongst the Himalayan peoples is that handwoven textiles display colors and patterns unique to their ethnic backgrounds. Finally, some people place great importance on jewelry. The Rai and Limbu women wear big gold earrings and nose rings to show their wealth through their jewelry. Several places in the Himalayas are of religious significance in
Hinduism Hinduism () is an Indian religion or '' dharma'', a religious and universal order or way of life by which followers abide. As a religion, it is the world's third-largest, with over 1.2–1.35 billion followers, or 15–16% of the global p ...
,
Buddhism Buddhism ( , ), also known as Buddha Dharma and Dharmavinaya (), is an Indian religions, Indian religion or Indian philosophy#Buddhist philosophy, philosophical tradition based on Pre-sectarian Buddhism, teachings attributed to the Buddha. ...
,
Jainism Jainism ( ), also known as Jain Dharma, is an Indian religion. Jainism traces its spiritual ideas and history through the succession of twenty-four tirthankaras (supreme preachers of ''Dharma''), with the first in the current time cycle bein ...
and
Sikhism Sikhism (), also known as Sikhi ( pa, ਸਿੱਖੀ ', , from pa, ਸਿੱਖ, lit=disciple', 'seeker', or 'learner, translit=Sikh, label=none),''Sikhism'' (commonly known as ''Sikhī'') originated from the word ''Sikh'', which comes fro ...
. A notable example of a religious site is Paro Taktsang, where
Padmasambhava Padmasambhava ("Born from a Lotus"), also known as Guru Rinpoche (Precious Guru) and the Lotus from Oḍḍiyāna, was a tantric Buddhist Vajra master from India who may have taught Vajrayana in Tibet (circa 8th – 9th centuries)... According ...
is said to have founded
Buddhism Buddhism ( , ), also known as Buddha Dharma and Dharmavinaya (), is an Indian religions, Indian religion or Indian philosophy#Buddhist philosophy, philosophical tradition based on Pre-sectarian Buddhism, teachings attributed to the Buddha. ...
in
Bhutan Bhutan (; dz, འབྲུག་ཡུལ་, Druk Yul ), officially the Kingdom of Bhutan,), is a landlocked country in South Asia. It is situated in the Eastern Himalayas, between China in the north and India in the south. A mountainou ...
. A number of Vajrayana Buddhist sites are situated in the Himalayas, in
Tibet Tibet (; ''Böd''; ) is a region in East Asia, covering much of the Tibetan Plateau and spanning about . It is the traditional homeland of the Tibetan people. Also resident on the plateau are some other ethnic groups such as Monpa, Taman ...
,
Bhutan Bhutan (; dz, འབྲུག་ཡུལ་, Druk Yul ), officially the Kingdom of Bhutan,), is a landlocked country in South Asia. It is situated in the Eastern Himalayas, between China in the north and India in the south. A mountainou ...
and in the Indian regions of
Ladakh Ladakh () is a region administered by India as a union territory which constitutes a part of the larger Kashmir region and has been the subject of dispute between India, Pakistan, and China since 1947. (subscription required) Quote: "Jammu ...
, Sikkim,
Arunachal Pradesh Arunachal Pradesh (, ) is a state in Northeastern India. It was formed from the erstwhile North-East Frontier Agency (NEFA) region, and became a state on 20 February 1987. It borders the states of Assam and Nagaland to the south. It shares ...
,
Spiti Spiti (pronounced as Piti in Bhoti language) is a high-altitude region of the Himalayas, located in the north-eastern part of the northern Indian state of Himachal Pradesh. The name "Spiti" means "The middle land", i.e. the land between Tib ...
and Darjeeling. There were over 6,000
monasteries A monastery is a building or complex of buildings comprising the domestic quarters and workplaces of monastics, monks or nuns, whether living in communities or alone (hermits). A monastery generally includes a place reserved for prayer which ...
in Tibet, including the residence of the
Dalai Lama Dalai Lama (, ; ) is a title given by the Tibetan people to the foremost spiritual leader of the Gelug or "Yellow Hat" school of Tibetan Buddhism, the newest and most dominant of the four major schools of Tibetan Buddhism. The 14th and current D ...
.
Bhutan Bhutan (; dz, འབྲུག་ཡུལ་, Druk Yul ), officially the Kingdom of Bhutan,), is a landlocked country in South Asia. It is situated in the Eastern Himalayas, between China in the north and India in the south. A mountainou ...
,
Sikkim Sikkim (; ) is a state in Northeastern India. It borders the Tibet Autonomous Region of China in the north and northeast, Bhutan in the east, Province No. 1 of Nepal in the west and West Bengal in the south. Sikkim is also close to the Silig ...
and
Ladakh Ladakh () is a region administered by India as a union territory which constitutes a part of the larger Kashmir region and has been the subject of dispute between India, Pakistan, and China since 1947. (subscription required) Quote: "Jammu ...
are also dotted with numerous monasteries.


Resources

The Himalayas are home to a diversity of medicinal resources. Plants from the forests have been used for millennia to treat conditions ranging from simple coughs to snake bites. Different parts of the plants – root, flower, stem, leaves, and bark – are used as remedies for different ailments. For example, a bark extract from an ''
Abies pindrow ''Abies pindrow'', the pindrow fir or west Himalayan fir, is a fir native to the western Himalaya and adjacent mountains, from northeast Afghanistan east through northern Pakistan and India to central Nepal. Description It is a large e ...
'' tree is used to treat coughs and bronchitis. Leaf and stem paste from an '' Andrachne cordifolia'' is used for wounds and as an antidote for snake bites. The bark of a '' Callicarpa arborea'' is used for skin ailments. Nearly a fifth of the
gymnosperm The gymnosperms ( lit. revealed seeds) are a group of seed-producing plants that includes conifers, cycads, '' Ginkgo'', and gnetophytes, forming the clade Gymnospermae. The term ''gymnosperm'' comes from the composite word in el, γυμν ...
s,
angiosperms Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants ...
and pteridophytes in the Himalayas are found to have medicinal properties, and more are likely to be discovered. Most of the population in some Asian and African countries depends on medicinal plants rather than prescriptions and such. Since so many people use medicinal plants as their only source of healing in the Himalayas, the plants are an important source of income. This contributes to economic and modern industrial development both inside and outside the region. The only problem is that locals are rapidly clearing the forests on the Himalayas for wood, often illegally.


See also

*
Eastern Eastern may refer to: Transportation *China Eastern Airlines, a current Chinese airline based in Shanghai *Eastern Air, former name of Zambia Skyways *Eastern Air Lines, a defunct American airline that operated from 1926 to 1991 *Eastern Air Li ...
and
Western Himalaya The Western Himalayas refers to the western half of the Himalayas, in northern Pakistan and northwestern India. It is also known as the Punjab Himalayas. Four of the five tributaries of the Indus River in Punjab (Beas, Chenab, Jhelum, and Ravi) ...
*
Indian Himalayan Region The Indian Himalayan Region (abbreviated to IHR) is the section of the Himalayas within the Republic of India, spanning seven Indian states and union territories, namely Ladakh, Jammu and Kashmir, Himachal Pradesh, Uttarakhand, Sikkim, West B ...
* List of Himalayan peaks and passes * List of Himalayan topics *
List of mountains in India Highest major summits in India Other significant mountains * Agastyamalai * Anamudi * Anginda * Apharwat Peak * Bamba Dhura * Bandarpunch * Betlingchhip * Blue Mountain * Brammah * Burphu Dhura * Chandrashila * Changuch * Chaudhara * ...
,
Pakistan Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's fifth-most populous country, with a population of almost 243 million people, and has the world's second-lar ...
,
Bhutan Bhutan (; dz, འབྲུག་ཡུལ་, Druk Yul ), officially the Kingdom of Bhutan,), is a landlocked country in South Asia. It is situated in the Eastern Himalayas, between China in the north and India in the south. A mountainou ...
,
Nepal Nepal (; ne, :ne:नेपाल, नेपाल ), formerly the Federal Democratic Republic of Nepal ( ne, सङ्घीय लोकतान्त्रिक गणतन्त्र नेपाल ), is a landlocked country in S ...
and China *
List of Ultras of the Himalayas This is a list of all the Ultra prominent peaks (with topographic prominence greater than 1,500 metres) in the Himalayas. Listed separately, to the west and north-west are the Karakoram and Hindu Kush Ultras, and while to the north-east and east a ...
* Trekking peak


References


Sources


General

* *


Geology

* * *


Climate

* *


Ecology


Society


Pilgrimage and Tourism

* * * * * * * *


Mountaineering and Trekking


Further reading

* Aitken, Bill, ''Footloose in the Himalaya'', Delhi, Permanent Black, 2003. . * Berreman, Gerald Duane, ''Hindus of the Himalayas: Ethnography and Change'', 2nd rev. ed., Delhi, Oxford University Press, 1997. * Edmundson, Henry, ''Tales from the Himalaya'', Vajra Books, Kathmandu, 2019. . * ''Everest'', the IMAX movie (1998). . * Fisher, James F., ''Sherpas: Reflections on Change in Himalayan Nepal'', 1990. Berkeley, University of California Press, 1990. . * Gansser, Augusto, Gruschke, Andreas, Olschak, Blanche C., ''Himalayas. Growing Mountains, Living Myths, Migrating Peoples'', New York, Oxford: Facts On File, 1987. and New Delhi: Bookwise, 1987. * Gupta, Raj Kumar, ''Bibliography of the Himalayas'', Gurgaon, Indian Documentation Service, 1981. * Hunt, John, ''Ascent of Everest'', London, Hodder & Stoughton, 1956. . * Isserman, Maurice and Weaver, Stewart, ''Fallen Giants: The History of Himalayan Mountaineering from the Age of Empire to the Age of Extremes''. Yale University Press, 2008. . * Ives, Jack D. and Messerli, Bruno, ''The Himalayan Dilemma: Reconciling Development and Conservation''. London / New York, Routledge, 1989. . * Lall, J.S. (ed.) in association with Moddie, A.D., ''The Himalaya, Aspects of Change''. Delhi, Oxford University Press, 1981. . * Nandy, S.N., Dhyani, P.P. and Samal, P.K.,
Resource Information Database of the Indian Himalaya
', Almora, GBPIHED, 2006. * Swami Sundaranand, ''Himalaya: Through the Lens of a Sadhu''. Published by Tapovan Kuti Prakashan (2001). . * Swami Tapovan Maharaj, ''Wanderings in the Himalayas'', English Edition, Madras, Chinmaya Publication Trust, 1960. Translated by T.N. Kesava Pillai. * Tilman, H. W., ''Mount Everest, 1938'', Cambridge University Press, 1948. * Turner, Bethan, et al. ''Seismicity of the Earth 1900–2010: Himalaya and Vicinity''. Denver, United States Geological Survey, 2013.


External links


The Digital Himalaya research project at Cambridge and Yale
(archived)




South Asia's Troubled Waters
Journalistic project at the Pulitzer Centre for Crisis Reporting (archived)
Biological diversity in the Himalayas
Encyclopedia of Earth {{Uttarakhand Mountain ranges Mountain ranges of China Geography of East Asia Geography of South Asia Landforms of East Asia Landforms of South Asia Physiographic divisions Tibetan Plateau