Russia; the Valdai tablelands, where all the great rivers of Russia take their rise; the broad and gently sloping meridional belt of the Ural Mountains; and lastly the Taimyr, Tunguzka and Verkhoyansk ranges in Siberia, which, notwithstanding their sub-Arctic position, do not reach the snow-line.
In the Valdai plateau there are only a few beds of mediocre coal.
The round flattened summits of the Valdai plateau do not rise above 1100 ft., and they present the appearance of mountains only in consequence of the depths of the valleys - the rivers which flow towards the depression of Lake Peipus being only 200 to 250 ft.
It rises in the Valdai plateau of Tver and, after a winding course of 2325 m.
The Volga rises in extensive marshes on the Valdai plateau, where the W.
930 ft.) at the .foot of the Valdai Hills, not far from the sources of the Volga and the Dvina, in 55° 5 2 ' N.
The Volkhov, which conveys the waters of Lake Ilmen, is the largest; Lake Onega discharges its waters by the Svir; and the Saima system of lakes of eastern Finland contributes the Vuoxen and Taipale rivers; the Syas brings the waters from the smaller lakes and marshes of the Valdai plateau.