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Yarlung Tsangpo Grand Canyon
The Yarlung Tsangpo Grand Canyon or Yarlung Zangbo Grand Canyon () or simply the Tsangpo Canyon, Brahmaputra Canyon or Tsangpo Gorge, along the Yarlung Tsangpo River in Tibet, China, is regarded by some as the deepest canyon in the world, and at 504.6 km (314 miles) is slightly longer than the Grand Canyon in the United States, making it one of the world's largest.〔http://www.kepu.net.cn/english/canyon/hiking/hik301.html〕 The Yarlung Tsangpo (Tibetan name for the upper course of the Brahmaputra) originates near Mount Kailash and runs east for about 1700 km, draining a northern section of the Himalayas before it enters the gorge just downstream of Pei, Tibet near the settlement of Zhibe. The canyon has a length of about 150 miles (240 km) as the gorge bends around Mount Namcha Barwa (7782 m) and cuts its way through the eastern Himalayan range. Its waters drop from about 2,900 m near Pei to about 1,500 m at the end of the Upper Gorge where the Po Tsangpo River enters. The river continues through the Lower Gorge to the Indian border at an elevation of 660 m. The river then enters Arunachal Pradesh and eventually becomes the Brahmaputra.〔Zheng Du, Zhang Qingsong, Wu Shaohong: ''Mountain Geoecology and Sustainable Development of the Tibetan Plateau'' (Kluwer 2000), ISBN 0-7923-6688-3, p. 312;〕
==Canyon depth==
As the canyon passes between the peaks of the Namcha Barwa (Namjabarwa) and Gyala Peri mountains, it reaches an average depth of about 16,000 feet (5,000 m) around Namcha Barwa. The canyon's average depth ''overall'' is about 7,440 feet (2,268 m), the deepest depth reaches 19,714 feet (6,009 m). This is one of the deepest canyons on Earth. This part of the canyon is at . Namcha Barwa, 25,531 feet (7782m) high, is at , and Gyala Peri, at 23,733 feet(7234m), is at .〔(First Descent of the Yarlung Tsangpo in Tibet )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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