Lake Peipus Lake Peipus Lake Peipus (; ; ) is the largest transboundary lake in Europe, lies on the border between Estonia and Russia. The lake is the fifth-largest in Europe after Lake Ladoga and Lake Onega (in Russia north of St. Petersburg), Lake Vänern (in Sweden), and Lake Saimaa (in Finland). Lake Peipus represents a remnant of a body of water which existed in this area during an Ice Age. It covers , and has an average depth of , the deepest point being . The lake has several islands and consists of 3 parts: The lake is used for fishing
Lake Otradnoye shore, whereas other roads are local and have access to A129, as well as to the shore of Lake Ladoga. The Saint Petersburg – Hiitola railroad runs along the western shore of the lake as well, with Otradnoye being the only railway platform close to the lakeshore. Lake Otradnoye Lake Otradnoye (; ) is a lake on Karelian Isthmus, in Priozersky District of Leningrad Oblast, south of the town of Priozersk. The area of the lake is , and the area of its drainage basin is . The lake is the source of the Pionerka River (Pyhäjöki River) which flows