Nanyi Valley, or Nanyi Gou (), is located in Milin County, Nyingchi City, Tibet Autonomous Region.
Nanyi Valley is a high-altitude ecological corridor bordering India's Arunachal Pradesh. At an average elevation of 2,900 meters, the valley spans 40 km² and combines subtropical forests (below 3,000m) with alpine meadows (above 3,800m). Its core attractions include Zagong Canyon's 120-meter waterfall and the Luoba Ethnic Village, home to Tibet's smallest ethnic group, preserving traditional hunting tools and textile crafts.
Geography.
Designated a national 4A tourist site in 2012, the valley's infrastructure was upgraded in 2018 with a 15 km elevated wooden boardwalk to protect fragile wetlands. A 2021 policy caps daily visitors at 2,000 to prevent ecological disruption. The valley also hosts the Qionglin Sky Burial Site, a protected cultural monument, though access is restricted to respect local customs.
Since 2020, solar-powered waste processing stations and real-time air quality monitors have been installed, reducing plastic waste by 85%. Military-administered zones along the disputed border limit tourism to the eastern third of the valley. Entry permits are mandatory, obtainable via Nyingchi's digital tourism platform.