The Hunza Valley lies beneath Rakaposhi, the only mountain on Earth that climbs almost 6,000 metres from its base to its summit without a single break — a wall of ice 7,788 metres high rising straight from the riverbank. The valley itself is a green corridor through the Karakoram range of Gilgit-Baltistan, in northern Pakistan, its terraced villages set around 2,400 metres among apricot and cherry orchards and tall poplars, framed by glacier-capped giants like Ultar Sar and Diran. For centuries a branch of the Silk Road ran through here, and the valley still speaks Burushaski, a language isolate with no proven relative anywhere in the world. Above the main town, Karimabad, stands the 700-year-old Baltit Fort, seat of Hunza's rulers, the Mirs, until the 1940s and restored as a museum in the 1990s.
The Karakoram Highway is the only road in, a paved successor to the old caravan track that still carries on to the Chinese border. Fifteen kilometres above Karimabad it runs into Attabad Lake, a 22-kilometre stretch of turquoise created in January 2010 when a landslide buried a village, dammed the Hunza River and drowned part of the highway; for five years people crossed it by boat, until a chain of tunnels reopened the route in 2015. Spring covers the valley in pink and white blossom; in autumn the poplars and mulberries go gold and crimson, while the snow on the peaks holds through every season. Climb to the Eagle's Nest viewpoint at Duikar for first light on Rakaposhi and the slender Lady Finger spire, and on clear nights the thin mountain air opens onto a thick field of stars.