Qashliq

Qashliq, also known as Isker or Sibir, was a fortified Siberian Tatar centre on the Irtysh River. Mentioned in Russian sources from the fourteenth century, it became the capital of the Khanate of Sibir in the sixteenth and developed most extensively in that century's first half. Its ruins lie near Tobolsk.

In 1582 Cossacks led by Yermak captured and devastated Qashliq. Siberian Tatars retook the ruined town in 1584, but lost it again in 1586. Tobolsk was founded nearby in 1587 and became a more enduring centre of Russian administration. The changes ended Qashliq's role as a khanate capital, although the capture of the town did not immediately settle control of the wider region.