Gyala Peri (Chinese: 加拉白垒, Pinyin: Jiālābáilěi) is a 7,294-metre (23,930 ft) 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 Himal of the Himalayas.
Gyala Peri lies just north of the Great Bend of the Yarlung Tsangpo River, the main river of southeastern Tibet, which becomes the Brahmaputra in India. It is 22 kilometres (14 mi) NNW of the higher Namcha Barwa.
The Yarlung Tsangpo Grand Canyon, also known as the Yarlung Zangbo Grand Canyon, the Tsangpo Canyon, the Brahmaputra Canyon or the Tsangpo Gorge (simplified Chinese: 雅鲁藏布大峡谷; traditional Chinese: 雅魯藏布大峽谷; pinyin: Yǎlǔzàngbù Dàxiágǔ), is a canyon along the Yarlung Tsangpo River in Tibet Autonomous Region, China. It is the deepest canyon in the world, and at 504.6 kilometres (313.5 mi) is slightly longer than the Grand Canyon in the United States, making it one of the world's largest. The Yarlung Tsangpo (Tibetan name for the upper course of the Brahmaputra) originates near Mount Kailash and runs east for about 1,700 kilometres (1,100 mi), 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 240 kilometres (150 mi) as the gorge bends around Mount Namcha Barwa (7,782 metres or 25,531 feet) and cuts its way through the eastern Himalayas. Its waters drop from about 2,900 metres (9,500 ft) near Pei to about 1,500 metres (4,900 ft) 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 metres (2,170 ft). The river then enters Arunachal Pradesh and eventually becomes the Brahmaputra.
View the full Wikipedia page for Yarlung Tsangpo Grand Canyon