Kading Valley (Chinese: 卡定沟, Tibetan: ག་དིང་), located 24 km northeast of Bayi Town in Nyingchi, Tibet Autonomous Region, is a protected geological area within the Nyang River basin at 2,980 meters elevation.^[1][2] Characterized by its steep Jurassic-era sandstone cliffs and a 198-meter cascading waterfall (locally termed "Celestial Buddha Waterfall"), the valley features rare tectonic formations including natural bas-reliefs resembling Guanyin, Sakyamuni, and Tibetan Buddhist deities formed through differential erosion.^[3]

The ecosystem sustains endemic species like Rhododendron wardii and Himalayan yew (Taxus wallichiana), with mixed coniferous-broadleaf forests covering 83% of its 12.6 km² area. Since 2015, the Nyingchi Ecological Bureau has implemented visitor caps (800 daily) and constructed elevated walkways to prevent soil erosion.^[4][5]

Culturally significant as a pilgrimage site, local legends attribute the rock formations to Padmasambhava's 8th-century spiritual imprints. Annual "Sangdrom" rituals involve hanging prayer flags along the waterfall's mist zone. UNESCO designated it part of the "Tibet Plateau Water-Circuit" geopark network in 2022, recognizing its integration of geological heritage and traditional environmental stewardship.^[6]