Isker, Archaeological site in Preobrazhenka, Russia.
The medieval fortress of Qashliq stands on the right bank of the Irtysh River, at its junction with the Sibirka stream near Tobolsk.
The fortress served as the capital of the Khanate of Sibir until 1582 when Cossack forces under ataman Yermak captured and demolished the settlement.
The remains of Qashliq contain artifacts from the Siberian Tatar civilization, showing the development of settlements in medieval Siberia.
The archaeological site lies 17 kilometers from modern Tobolsk, with coordinates at 58.14942 latitude and 68.52048 longitude.
Early 19th-century documents indicate that traces of the fortress walls remained visible, marking the location of this former Siberian capital.
Location: Preobrazhenka
GPS coordinates: 58.14942,68.52048
Latest update: May 27, 2025 08:54
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