Gyala Peri

Gyala Peri towers over the Tsangpo gorge, a 7,294-metre peak that faces Namcha Barwa across the world's deepest river canyon in southeastern Tibet. Together the two summits form the gateway where the Yarlung Tsangpo swings south toward Assam, and Gyala Peri's steep flanks make it one of the region's boldest alpine objectives.

This is high-altitude alpinism on snow, ice and rock, not a bolted crag. Ascents tackle glaciated faces and corniced ridges of gneiss and granite, with objective hazard from serac fall and storm; the peak was first climbed in 1986 and has seen only a handful of ascents since. Difficulty sits in the demanding expedition alpine range, requiring acclimatisation and self-sufficiency.

Autumn offers the most reliable window, roughly late September to October, after the summer monsoon that drenches this humid corner of the plateau withdraws and colder, more settled conditions firm up the snow.

Reaching the mountain means travelling deep into the gorge country, through Tibetan valleys of forest and farmland where the climate is far milder than the plateau interior. Permits and expedition-grade logistics are mandatory, and the peak remains far more often photographed from the canyon than climbed.

Standing just across the gorge from Namcha Barwa, Gyala Peri completes one of the most dramatic mountain gateways on the planet, the two giants funnelling the Tsangpo into its great bend. Its relative obscurity compared with its famous neighbour appeals to alpinists who prefer quiet objectives, though the same remoteness, unstable weather and dense approach terrain make any attempt a major undertaking demanding time and resources.