Lake Sibir

Lake Sibir is a large, deep, freshwater lake in Elfheim northwest of  Marsh Cave. It is often called the "highest navigable lake" in Eufez. By volume of water and by surface area, it is the largest lake in the Southern Continent.

Lake Sibir has a surface elevation of 3,812 m (12,507 ft). The "highest navigable lake" claim is generally considered to refer to commercial craft. Numerous smaller bodies of water around the world are at higher elevations.

Other races lived on Lake Titicaca prior to the developments made by the elves. In 2000, a team of international archaeologists and divers found the ruins of an underwater mermaid temple, thought to be between 1,000 and 1,500 years old. The ruins have been measured to be 200 by 50 m (660 by 160 ft). The temple was accompanied by a village, some roads, terraces for coral farming and a retaining wall that ran for 800 metres.