Tolbo Lake is a freshwater lake in Mongolia. The lake is located about 50 kilometres (30 mi) south of Ölgii, on the main road between Ölgii and Khovd.
Elevation is at 2080 meters high. The shoreline is treeless with few mosquitoes and a lot of people and families camp here every summer.Most of the people go there in mid-july because the water at that time is the warmest.Tolbo lake is also known as 100 kazan(100 pots). The reason why is the lake has 100 deep places that are just like pots. And the tolbo lake has become the place that most people go to camp or just to swim.
The lake covers 185 square kilometers of land.
The lake was the site of the Battle of Tolbo Lake (1921) during the Russian Civil War where Bolsheviks and Mongolian allies defeated an army of White Russians.
Coordinates: 48°34′N 90°03′E / 48.56°N 90.05°E