The nature of Valdai. Hilly area, meadow with wildflowers, lake. Forest; forest stream, anthill. The sources of the rivers: Volga, Western Dvina, Dnieper. Boulders overgrown with grass. Hydrologists on the river take samples of water and soil. Voldaysko-Iversky monastery on the island, tourists sail to it by boat. Passers-by are walking along the street of the city of Valdai, city transport is passing by.