Hunza is a valley in the Karakoram of northern Pakistan, on the Karakoram Highway between Gilgit and the Chinese border, where green terraces of apricot and cherry orchards climb the slopes under a wall of ice rising to Rakaposhi, 7,788 metres, and two forts, one 700 years old, stand above the villages. The valley's capital is Karimabad, and Baltit Fort is its crown, a mud, stone and timber fort built by the Mirs of Hunza on a moraine above the terraces, reshaped in a Tibetan style six centuries ago by craftsmen a princess of Baltistan brought with her marriage; the tour starts in the storerooms cut into the base, where wheat and maize were kept, and works up past the guardroom to a windowless room with a pit in the floor for the Mir's gold and out onto a roof above the valley. Altit Fort, on a rock spur above the river, is the older of the two and the first seat of the Mirs, its tower hanging over a drop to the water.
The valley is famous for its light and its trees. Each spring the terraced orchards fill with pink and white blossom beneath the snow wall of Rakaposhi, and in autumn, from mid-October, the poplars and mulberries turn gold and crimson as fresh snow settles on the peaks around; a jeep track climbs to Eagle's Nest at Duikar, above Karimabad, for a sunrise that lights Rakaposhi, Ultar and Ladyfinger one by one. Two kilometres below Karimabad stands Ganish, the oldest settlement in Hunza, a walled square with a stone water tank and carved wooden mosques belonging to its clans. The highway itself is the reason the valley is reachable, threading the gorge along the old Silk Road line past stone-walled villages and beneath the ice face of Rakaposhi toward the Khunjerab Pass. The valley's mother tongue, Burushaski, is a language isolate, matched to no other language on Earth after more than a century of study. Hunza is a green valley under a white wall, and its people speak a language that belongs only to them.