White Sea–Baltic Canal waterway length is , of which are man-made. The current flows north from Lake Onega to the White Sea, and all navigation marks are set according to it. Once in Lake Onega, ships can exit the southwest shore through the Svir River (and its two locks) to reach Lake Ladoga and then proceed down the Neva River to Saint Petersburg and the Baltic Sea. Alternatively, from Lake Onega river ships can sail eastward into the Volga–Baltic Waterway. The canal begins near Povenets settlement in Povenets bay of Lake Onega. After Povenets there are seven locks close together, forming the "Stairs
Arkhangelsk It was also the scene of Mudyug concentration camp. During both world wars, Arkhangelsk was a major port of entry for Allied aid. During World War II, the city became known in the West as one of the two main destinations (along with Murmansk) of the Arctic Convoys bringing supplies in to assist the Soviet Union. During Operation Barbarossa, the German invasion of the Soviet Union in 1941, Arkhangelsk was one of two cities (the other being Astrakhan) selected to mark the envisaged eastern limit of Nazi control. This military operation was to be halted at this A-A line but