The fortress of Mugh stands on a rocky hill above the Zeravshan valley in the mountains of northern Tajikistan, about twelve kilometres from Ayní. It looks like little today, a scatter of foundations and fallen mud-brick on a barren summit, but it holds one of the most important finds in Central Asian history. In 1932 a shepherd found a leather bag of old documents, and the manuscripts turned out to be letters, contracts and records written in Sogdian, the language of the merchants who ran the Silk Road across this region.
The man at the centre of the story is Dewashtich, a Sogdian ruler of Panjakent who refused to submit when Arab armies arrived in the early eighth century. He retreated to this mountain refuge, and his papers were hidden or abandoned when the fortress fell. He was captured and executed, and the documents lay under stones for twelve centuries. The collection includes a marriage contract, tax lists and letters, and it gives a detailed picture of daily life that no chronicle does.
The way here is a mountain journey. Coming from Dushanbe, the highway to the north climbs through the Fann range and past the Anzob tunnel, then drops toward the Zeravshan. Expect rough patches, potholes, rockfall and trucks grinding up the grades. The side roads toward the fortress are narrower and may need a sturdy bike and careful reading of the map. Late spring and early autumn are best. Winter snow can shut the passes and summer sun makes the open slopes oven-hot.
Ayní is a small place, and fuel is not guaranteed in the villages beyond it, so top up in Dushanbe or at the larger stations along the main highway and carry a small reserve. Tea and bread are available in roadside chaikhanas, which also make decent rest stops. The Zeravshan itself, milky with glacial melt, keeps you company for much of the way, and apricot orchards line the valley in spring.