Lake Peipus the town. Near Kallaste, there is one of the largest surfacings of Devonian sandstone with a length of and a maximum height of , as well as several caves and one of the largest colonies of swallows in Estonia. 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
Finnish Ladoga Naval Detachment Finnish Ladoga Naval Detachment Finnish Ladoga Naval Detachment () was a Finnish naval unit stationed on Lake Ladoga between 1920-1940 and 1941-1944. The Treaty of Tartu was signed by the Russians and the Finns in 1920. It included terms which limited the size of naval vessels on Ladoga to 100 tons, and the calibre of their armament to a maximum of 47 mm. When the Finns embarked on their naval rebuilding program in the early 1930s, some vessels were purposely designed to fit this 100 t limitation, including a small submarine. The Finns, however, found more use for their few