History
The Orkhon valley was the political heart of the steppe for well over a thousand years. Xiongnu remains have been found in the region's valleys, and the Turkic khaganates of the 6th to 8th centuries ruled from the Orkhon, leaving the Orkhon inscriptions at Khöshöö Tsaidam — the oldest known texts in a Turkic language. The Uyghur Khaganate then built its walled capital, Ordu-Baliq, on the river in the 8th century.
Genghis Khan chose the valley as a base, and his son Ögedei built Karakorum there as the imperial capital in the 1230s. Ambassadors, merchants and missionaries came from across Eurasia; the Flemish friar William of Rubruck described its silver fountain tree in 1254. After Kublai Khan moved the capital to China the city declined, and a Ming army sacked it in 1388. In 1585 Abtai Sain Khan founded Erdene Zuu beside the ruins, using their stones, and in the 17th century Zanabazar built his hermitage at Tövkhön on a mountain above the valley.
In the far north, the Darkhad and the reindeer-herding Dukha, who crossed from Tuva, lived at the edge of the empire and kept shamanic traditions. The purges of the 1930s shut almost every monastery, although part of Erdene Zuu survived as a museum. In the 1970s a Soviet–Mongolian venture opened a vast copper mine in the hills of Orkhon, and the city of Erdenet grew up around it.
