[1] 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.
[2][3] 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.
The valley also hosts the Qionglin Sky Burial Site, a protected cultural monument, though access is restricted to respect local customs.