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Himalayas

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The Himalayas are a massive mountain range located in Asia.

Himalaya annotated
Himalaya annotated

They serve as a giant physical barrier between the Tibetan Plateau to the north and the Indo-Gangetic Plain to the south. The range stretches in a long arc for 2,400 km.

Himalayas and allied ranges NASA Landsat showing the eight thousanders, annotated with major rivers
Himalayas and allied ranges NASA Landsat showing the eight thousanders, annotated with major rivers

This range spans five different countries: Nepal, India, China, Bhutan, and Pakistan. The sovereignty of parts of the range, specifically in the Kashmir region, is currently disputed among India, Pakistan, and China.

The formation of these mountains is a result of complex plate tectonics.

Indian plate movement towards Eurasia 71 Mya onward
Indian plate movement towards Eurasia 71 Mya onward

About 70 million years ago, the Indian continental plate began moving northward toward the Eurasian plate. As they collided, the less buoyant oceanic plate subducted, or slid under, the Eurasian plate into the asthenosphere. However, the thick and buoyant Indian continental plate could not subduct easily. Instead, the lateral compression caused the upper crust to fold into thick sheets called nappes.

Folded Himalayan Rock Layers at Kali Gandaki in Nepal 2014
Folded Himalayan Rock Layers at Kali Gandaki in Nepal 2014

This massive process of mountain building is known as orogeny.

The Himalayas consist of four distinct, parallel mountain ranges arranged from south to north. The southernmost range is the Sivalik Hills. Moving north, you find the Lower Himalayan Range. The central and highest section is the Great Himalayas.

Aerial View of Peaks of Khumbu, Ngozumpa Glacier and Gokyo Lakes (crop)
Aerial View of Peaks of Khumbu, Ngozumpa Glacier and Gokyo Lakes (crop)

Finally, the northernmost section is the Tibetan Himalayas. The range varies in width, measuring 350 km in the west and narrowing to 151 km in the east. The western anchor is the peak of Nanga Parbat, while the eastern end is Namcha Barwa.

Geography within the range is defined by massive peaks and deep valleys. In Nepal, the Great Himalayas contain the 8,000-metre peaks of Dhaulagiri and Annapurna. These are separated by the Kali Gandaki Gorge, which splits the range into western and eastern sections. Further east lies the Mahalangur Himal. This section contains four of the world's six highest mountains, including Mount Everest.

Panorama from poonhill-2019-BJ
Panorama from poonhill-2019-BJ

In the far east, the Kangchenjunga massif sits on the border of India and Nepal. This is the third-highest mountain in the world.

The mountains play a vital role in the Earth's water systems. Major rivers such as the Indus, the Ganges, and the Tsangpo–Brahmaputra all rise near the Himalayas.

Yarlung Tsangpo river tibet
Yarlung Tsangpo river tibet

The combined drainage basin of these rivers provides water for approximately 600 million people. Within the mountains themselves, about 53 million people live. The landscape is home to diverse wildlife, including yaks and red pandas.

Machermo, Yaks, Nepal
Machermo, Yaks, Nepal
Two Red Panda Cubs in the Tree 01
Two Red Panda Cubs in the Tree 01

High-altitude lakes, such as Gurudongmar Lake, also dot the landscape.

Cultural and religious significance is deeply woven into the Himalayan landscape. The name comes from the Sanskrit word Himālaya, meaning "abode of snow." Many peaks are considered sacred in Hinduism and Buddhism.

Shiva shrine, Gangabal Lake
Shiva shrine, Gangabal Lake

Because of this sanctity, several summits are off-limits to climbers. These include Kangchenjunga, Gangkhar Puensum, Machapuchare, Nanda Devi, and Mount Kailash. In Bhutan, the monastery of Paro Taktsang serves as a notable cultural landmark.

Paro Taktsang, Bhutan (edited)
Paro Taktsang, Bhutan (edited)

The collision between India and Eurasia did more than just build mountains. It also caused the crust to thicken and shorten, creating the high Tibetan Plateau. This happened because the collision dragged Eurasia's ancient volcanic mountains farther north. This process is linked to isostatic equilibrium, which is the balance between gravity pulling the crust down and the mantle pushing it up. This balance helps maintain the incredible altitude of the plateau and the surrounding peaks.

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🖼️ Images & Media (30)
File:Symbol template class pink.svg
Symbol template class pink.svg
File:Panorama from poonhill-2019-BJ.jpg
Panorama from poonhill-2019-BJ.jpg
File:Aerial View of Peaks of Khumbu, Ngozumpa Glacier and Gokyo Lakes (crop).jpg
Aerial View of Peaks of Khumbu, Ngozumpa...
File:Two Red Panda Cubs in the Tree 01.jpg
Two Red Panda Cubs in the Tree 01.jpg
File:Land ocean ice cloud hires.jpg
Land ocean ice cloud hires.jpg
File:Panorama of Himalayas from Ranikhet, Uttarakhand, India.jpg
Panorama of Himalayas from Ranikhet,...
File:Shiva shrine, Gangabal Lake.jpg
Shiva shrine, Gangabal Lake.jpg
File:Gurudongmar Lake Sikkim, India (edit).jpg
Gurudongmar Lake Sikkim, India (edit).jpg
File:Valley of flowers national park, Uttarakhand, India 03 (edit).jpg
Valley of flowers national park,...
File:Folded Himalayan Rock Layers at Kali Gandaki in Nepal 2014.jpg
Folded Himalayan Rock Layers at Kali...
File:View on Gyakar (edited).jpg
View on Gyakar (edited).jpg
File:Confluence of Indus and Zanskar rivers.jpg
Confluence of Indus and Zanskar rivers.jpg

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