Assumption Cathedral, Staraya Ladoga Assumption Cathedral, Staraya Ladoga Assumption Cathedral, also Dormition Cathedral () in the selo of Staraya Ladoga, Volkhovsky District, Leningrad Oblast, Russia is one of the oldest churches of Russia, dating from the second half of the 12th century. It is one of the few surviving pre-Mongol buildings in Russia, and the northernmost one. The cathedral is the katholikon of the female Assumption Monastery, one of the several monasteries in Staraya Ladoga, and is located on the left bank of the Volkhov River. The building was designated an architectural monument of federal significance (#4710028015). Staraya Ladoga was the first seat of
Lake Onega is relatively cold, with temperatures below for half of the year and average summer temperatures of about . The catchment area of drains into the lake via 58 rivers and more than 110 tributaries, including the Shuya, Suna, Vodla, Vytegra and Andoma. The only outgoing River Svir, which marks the southern boundary of Karelia, runs from the southwestern shore of Lake Onega to Lake Ladoga and continues as the Neva River to the Gulf of Finland. The White Sea–Baltic Canal runs through the lake from the White Sea to the Baltic Sea. The Volga–Baltic Waterway connects Onega Lake with the