Based on the world record nomination from Asia Records Institute (ASRI) and Decision No. WK/USA.INDIA/602/2020/No.58, World Records Union (WorldKings) officially declared Yarlung Tsangpo Grand Canyon as “World's deepest canyon”.
The Yarlung Tsangpo Grand Canyon, also known as the Yarlung Zangbo Grand Canyon, the Tsangpo Canyon, the Brahmaputra Canyon or the Tsangpo Gorge, is a canyon along the Yarlung Tsangpo River in Tibet Autonomous Region, China.
As the canyon passes between the peaks of the Namcha Barwa (Namjabarwa) and Gyala Peri mountains, it reaches an average depth of about 5,000 m (16,000 feet) around Namcha Barwa. The canyon's average depth overall is about 2,268 m (7,440 feet), the deepest depth reaches 6,009 m (19,714 feet).
At 504.6 kilometres (313.5 mi) is slightly longer than the Grand Canyon in the United States, making the Yarlung Tsangpo Grand Canyon 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 gorge has a unique ecosystem with species of animals and plants barely explored and affected by human influence. Its climate ranges from subtropical to Arctic. The highest temperature in Tibet is 43.6 °C (110.5 °F) and is recorded near the border of India at about 600 metres (2,000 ft) above sea level.
According to en.wikipedia