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
Ladoga Canal a major disappointment to the government. Although the canal was one of the largest hydroengineering facilities in 18th-century Europe, it was still too shallow to maintain a considerable traffic. Catherine the Great decided to expand the canal by building another section between the Volkhov and Syas Rivers. This project was implemented between 1765 and 1802 (so-called Syas Canal). The third part of the Ladoga Canal, connecting the Syas and the Svir, was built over the years 1802 to 1810 (so-called Svir Canal). In the course of the 19th century, the Ladoga Canal was used by about 15,000 vessels and 10,000