Onega, Russia town is also served by the Arkhangelsk–Murmansk rail line, which branches off in Obozerskaya railway station from the railroad between Moscow and Arkhangelsk and runs west to Onega and Belomorsk where it joins the railroad between Petrozavodsk and Murmansk. The railroad was built during World War II to secure the transport of goods from the harbor of Murmansk to central Russia. Onega is connected to Severodvinsk by a road. There are no all-seasonal roads on the left bank of the Onega River. The Onega is navigable downstream from the "selo" of Porog; there is regular passenger navigation. There is also
Lake Vozhe Vozhega and the Modlona. The lake freezes up in October - November (some parts freeze to the very bottom) and stays icebound until May. Administratively, the lake is divided between Kirillovsky District (west) and Vozhegodsky District (east) of Vologda Oblast. The northern shore belongs to Kargopolsky and Konoshsky District of Arkhangelsk Oblast, but the boundary between the oblasts is drawn such that the whole area of the lake is in Vologda Oblast. In terms of the area, Lake Vozhe is the third natural lake of Vologda Oblast (behind Lake Onega and Lake Beloye and just ahead of Lake Kubenskoye) and