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 losses. In the spring 1942 Finnish commander made recommendations to German leadership past Finnish HQs leading to the formation of Naval Detachment K, which included the Finnish motor torpedo boat "Sisu", to the lake. They were also joined in summer 1942 by a German unit, the Einsatzstab Fähre Ost (EFO), of armed Siebel ferries. Operations of the Naval Detachment K or EFO had very limited success. When Germany decided to withdraw its naval assets from Ladoga in late 1942, the Finns bought two of the Siebel ferries, "T-2" and "T-17". Later, when the Soviets' 1944 offensive against the Finns began,