Yading is a reserve on the edge of the Tibetan plateau in western Sichuan, in China, where three snow peaks stand in a triangle that Tibetan Buddhism reads as a single figure. Each is a bodhisattva: Chenrezig for compassion, the tallest at 6,032 metres; Jambeyang for wisdom, the sharp pyramid; Chanadorje for power. Pilgrims have walked a kora clockwise around all three for centuries, keeping the mountains on their right. It begins at Chonggu Monastery, at about 3,900 metres, and the visitor trail shares its first stretch. You arrive higher than the monastery you have come to see. The airport that serves the valley sits at 4,411 metres, so the flight from Chengdu climbs from around 500 metres in an hour and gives the body no time to adjust. Nothing here is walked fast.
An easy path from the monastery takes you to Pearl Lake, a small dark tarn directly beneath Chenrezig, and on a windless morning the whole peak lies inverted on it. The main trail carries on up the valley to Luorong Pasture, a meadow of yaks and streams, and then turns steep and stays steep. Boardwalk and stone steps take you about 400 metres up in thin air to Milk Lake at 4,600 metres, ringed by the pale stone it is named for, with Jambeyang standing over it. Five-Colour Lake lies another hundred metres higher, and that is where the trail stops. The larches grow between 3,800 and 4,100 metres, which is the exact band the valley trail runs through, so when they turn deep gold in the last week of October the whole walk passes through colour under white summits. Joseph Rock got in here in 1928, when the range was held by brigands said to shoot outsiders on sight, and what bought him passage was not money but a stack of magazines carrying his own photographs of the local king. The hour to be at Luorong is before sunrise, while the meadow is still grey and the frost has not lifted. The light reaches Jambeyang's pyramid first and holds it copper-pink for a few minutes before it comes down to the grass.