Types of cities, rivers, lakes located along the path of the Mariinsky system - Shlisselburg, Ladynoye pole, Vytegra, Kirillov, Cherepovets, rivers - Syasi, Svir, Lake Onega, Ladoga bypass canal, Old Petrovsky canal, Matkoozero lake, New Mariinsky canal, Belozersky canal, view of the Kirillo-Belozersky monastery, barges, steamers. Types of cities located along the river. Volga - Yaroslavl, Kostroma, Ples, Nizhny Novgorod, Kazan, Ulyanovsk, Tetyushi, Samara. The cities of Saratov, Kamyshin, Astrakhan. Industrial enterprises, architectural monuments. Newsreels: Nizhny Novgorod Fair, views of old cities, industrial enterprises.