Tsomoriri, one of the highest lakes in the world, lies in the Changthang (literally meaning, northern plains) region, between 4000-5000m altitude. Changthang's most striking feature is the absence of a consistent slope, which would enable water to drain away. Rather the undulating land forms itself into huge basins, into which snowmelt streams flow, and finding no outlet settle into the great brackish lakes, like Tsomoriri. Tsomoriri which is a fresh to brackish water lake, spread over an area of about 120 sq.km. with a maximum depth of 40 m. Wet meadows and borax loaded wetlands covering around 10 sq.km. border its northern and southern shores. Tsomoriri has been designated as a Ramsar Site in November 2002.