Permafrost over Substantially of Siberia is A significant impediment to progress; volcanic exercise from the Kuril Islands; volcanoes and earthquakes to the Kamchatka Peninsula; spring floods and summer months/autumn forest fires in the course of Siberia and portions of European Russia that the event of the East Slavs passed by https://israel3938t.techionblog.com/30824421/details-fiction-and-russia