The lockal legend told us that ataman Yermak stay at this stone by the river Silva for winter time in in 1582 befor overthrew Kuchum Khan's Tatar empire in a battle that marked the "conquest of Siberia".
Yermak Timofeyevich was the first conquest of Siberia The specifics of his life, such as his appearance, background, and dates of events, remain points of controversy for historians.
So.. this warrior profound influence on Siberian relations and establishing the Tsardom of Russia as an aggressive imperial power east of the Urals.