 Complete the following phrase:  Backpacking, trekking and skiing, Chernousov crossed the Carpathians mountings, Polesye Belorussia, Crimea, Caucasus, the Altai Mountains, Sayan, Mountain Shoria, the Baltics, the Volga, the Urals and the Caspian Sea. He also went kayaking on the Irtysh, boating at the Teletskoye Lake, on the Angara, Lake Baikal and the Dnieper. Chernousov descended to the caves with the speliologues and took part in the expeditions to the site of the 