Tuz Gölü

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Cihanbeyli and Sereflikoçhisar produce 150,000t/147,630 tons which make up about a quarter of Turkey's total salt production and supply the country's own needs. Layers of salt and deposits from the early Tertiary period can often be found on the edges of the salt lake and these provide evidence that the high salt content of 23% (a near saturated salt mixture in which the salt crystallises in the solution) is not primarily due to the internal drainage of the lake but to the high salt content of the subsoil.

It is possible to demonstrate that the water level during the Ice Age, or more precisely the so-called Pluvial period, was much higher than it is now and that the lake probably contained fresh water, as at that time the water drained to the northeast into the River Kizilirmak. The lake has been shrinking for about 15,000 years.