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Gorge · Tibet

Yarlung Tsangpo Grand Canyon

雅鲁藏布大峡谷 (Yǎlǔzàngbù Dà Xiágǔ)

The great bend of the Yarlung Tsangpo around Namcha Barwa

The Yarlung Tsangpo Grand Canyon in Nyingchi, south-eastern Tibet, is the gorge in which the Yarlung Tsangpo breaks through the eastern end of the Himalaya, curving in a great bend around Namcha Barwa (7,782 m) before flowing south towards India as the Brahmaputra. Chinese surveys give it a length of about 505 kilometres and a maximum depth of about 6,000 metres, which would make it the deepest canyon on Earth; it is protected as a national nature reserve.

  • National nature reserve

Key facts

Length
about 505 km (Chinese surveys)[1]
Maximum depth
about 6,000 m (Chinese surveys)[1]
Highest peak
Namcha Barwa, 7,782 m[2]
River
Yarlung Tsangpo (upper Brahmaputra)[2]
Location
Mainling and Medog counties, Nyingchi, Tibet
7,782 m above sea level · highest point: Namcha Barwa

Overview

After flowing east for more than a thousand kilometres across southern Tibet, the Yarlung Tsangpo meets the eastern syntaxis of the Himalaya near Mainling. There it turns north-east, swings in a tight horseshoe around Namcha Barwa and Gyala Peri — two peaks of more than 7,000 metres standing only about 20 kilometres apart — and then runs south through Medog county towards the area administered by India as Arunachal Pradesh, which China claims. Between the two summits the river drops steeply through a gorge whose walls rise thousands of metres above it.

The canyon was named the Yarlung Tsangpo Grand Canyon by the State Council in 1998, following Chinese scientific expeditions that declared it the world's deepest. For Tibetan Buddhists the region is Pemako, a “hidden land” (beyul) revealed in prophecy as a sanctuary, and the home of the Monpa and Lhoba peoples.

How the landscape formed

The canyon marks the point where the Indian plate's collision with Eurasia bends the Himalaya around its eastern end. Namcha Barwa is rising unusually fast, and geologists debate whether the river kept its course as the mountains grew or captured the headwaters of rivers flowing south. The steepest section falls hundreds of metres in a few tens of kilometres, with rapids and waterfalls in the inner gorge. The canyon also acts as a channel for moist air from the Indian Ocean, which carries monsoon rain deep into south-eastern Tibet and allows forests to grow far higher and further north than elsewhere on the plateau.

Highlights

  • Namcha Barwa

    南迦巴瓦峰 (Nánjiābāwǎ Fēng)

    The 7,782 m peak at the eastern end of the Himalaya, around which the river bends; long one of the highest unclimbed mountains until a Sino-Japanese ascent in 1992.

  • Gyala Peri

    加拉白垒峰 (Jiālā Báilěi Fēng)

    The 7,294 m peak on the northern side of the bend, facing Namcha Barwa across the gorge.

  • The Great Bend

    大拐弯 (Dà Guǎiwān)

    The horseshoe turn of the river around Namcha Barwa, the most dramatic stretch of the canyon.

  • Pai

    派镇 (Pài Zhèn)

    The village at the upper end of the canyon, starting point for the walking routes and viewpoints over Namcha Barwa.

  • Medog

    墨脱 (Mòtuō)

    The subtropical county below the bend, among the last in China to be reached by an all-year road, opened in 2013.

Plants and wildlife

Because the canyon funnels monsoon moisture northwards, it holds an unbroken sequence of vegetation zones from tropical and subtropical forest near the river in Medog through temperate broadleaf and conifer forest to alpine meadow, glaciers and snow — one of the most complete altitudinal sequences on Earth. It is among the richest areas of the Tibetan Plateau for plants, fungi and animals.

Plants

  • Nyingchi spruce

    林芝云杉 (Línzhī yúnshān)

    Tall spruces forming dense forests on the valley slopes upstream of the canyon.

  • Tibetan tree peony

    大花黄牡丹 (dàhuā huáng mǔdān)

    Paeonia ludlowii, a rare yellow tree peony endemic to the valleys of the Yarlung Tsangpo in south-eastern Tibet.

  • Tree ferns

    桫椤 (suōluó)

    Grow in the humid lower forests of Medog, far north of their usual range.

Wildlife

  • Bengal tiger

    孟加拉虎 (Mèngjiālā hǔ)

    Recorded in small numbers in the forests of Medog, at the north-eastern edge of the species' range.

  • Takin

    羚牛 (língniú)

    A large goat-antelope of the bamboo and rhododendron forests.

  • Himalayan monal

    棕尾虹雉 (zōngwěi hóngzhì)

    A brilliantly coloured pheasant of the high forests and meadows.

Culture and legend

In Tibetan Buddhist tradition Pemako is the foremost of the hidden lands (beyul) prophesied by Padmasambhava as places of refuge in times of trouble, and its landscape is read as the body of the goddess Dorje Phagmo. Tibetan pilgrims and, over the centuries, settlers came in search of it. The Monpa and Lhoba, who practise farming and hunting in the lower valleys, are among the officially recognised ethnic groups of the region. The inner gorge was long one of the least explored places on Earth: the British plant hunter Frank Kingdon-Ward explored it in 1924 but could not follow the river through its most inaccessible section.

  • Pemako

    白马岗 (Báimǎgǎng)

    The Tibetan Buddhist “hidden land” of the lower canyon and Medog, a destination of pilgrimage.

  • Monpa

    门巴族 (Ménbā zú)

    A people of the lower valleys, speaking their own language and following Tibetan Buddhism.

  • Lhoba

    珞巴族 (Luòbā zú)

    One of the smallest officially recognised ethnic groups in China, living in Medog and neighbouring counties.

History

  1. 1880s

    The Tsangpo question

    Explorers sent by the Survey of India, among them Kinthup, sought to prove that the Tsangpo and the Brahmaputra were the same river.

  2. 1924

    Kingdon-Ward and Cawdor

    Frank Kingdon-Ward and Lord Cawdor explored much of the gorge, leaving a short unexplored section around the waterfalls.

  3. 1992

    First ascent of Namcha Barwa

    A Sino-Japanese expedition reached the summit of Namcha Barwa.

  4. 1998

    Canyon named

    Following Chinese scientific expeditions, the State Council approved the name Yarlung Tsangpo Grand Canyon; in the same year American expeditions reached the Hidden Falls in the inner gorge.

  5. 2000

    National nature reserve

    The Yarlung Tsangpo Grand Canyon National Nature Reserve was established.

  6. 2013

    Road to Medog opened

    The Bomi–Medog road gave the county its first all-year road connection.

  7. 2025

    Hydropower project

    Construction of a large hydropower project on the lower Yarlung Tsangpo began; India and Bangladesh, downstream on the Brahmaputra, have raised concerns.

Through the seasons

  • Spring

    Peach blossom in the Nyingchi valleys in March and April and the first clear views of Namcha Barwa; the most celebrated season in the region.

  • Summer

    Heavy monsoon rain from June to September; the peaks are usually hidden and landslides frequent on mountain roads.

  • Autumn

    October and November bring clear skies, autumn colour in the forests and the best chance of seeing Namcha Barwa's summit.

  • Winter

    Dry and relatively mild in the valleys, with snow on the passes; the peaks are often visible.

Routes and ways in

  1. Great Bend viewpoints

    A road from Pai follows the river downstream to viewpoints over the Great Bend and Namcha Barwa.

  2. Pai to Gyala trek

    A walking route along the upper canyon between villages, with close views of Namcha Barwa and Gyala Peri; guided, with local permits.

  3. Road to Medog

    The mountain road from Bomi, and a later road over the Duoxiong La, descend from alpine forest to the subtropical valley of Medog.

Practical notes

  • The canyon lies in a border area: foreign visitors need a Tibet Travel Permit and additional permits, arranged through a registered travel agency with a guided itinerary; access to Medog and the lower gorge is restricted. See the visa section for general entry rules.
  • Altitudes are lower than in central Tibet — about 3,000 m at Nyingchi and far lower in Medog — so altitude sickness is less of a problem, but passes on the way are high.
  • Landslides and road closures are common in the rainy season, and the forest trails are wet and leech-ridden in summer.
  • Nyingchi, with its airport and a railway to Lhasa, is the base for visits.

Cities to start from

Frequently asked questions

Sources

  1. People's Government of the Tibet Autonomous Region — People's Government of the Tibet Autonomous Region (retrieved 27 September 2026)
  2. Brahmaputra River — Encyclopaedia Britannica (retrieved 27 September 2026)
  3. Institute of Tibetan Plateau Research — Chinese Academy of Sciences (retrieved 27 September 2026)

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