A dry lake bed, also known as a playa, is a basin or depression that formerly contained a standing surface water body, which disappears when evaporation processes exceed recharge. If the floor of a dry lake is covered by deposits of alkaline compounds, it is known as an alkali flat. If covered with salt, it is known as a salt flat.
Namak Lake, Qom Province, Iran
The Chott el Djerid in Tunisia
Salt harvesting in Salar de Uyuni, Bolivia, the world's largest salt flat
Sailing stone in Racetrack Playa
A salt lake or saline lake is a landlocked body of water that has a concentration of salts and other dissolved minerals significantly higher than most lakes. In some cases, salt lakes have a higher concentration of salt than sea water; such lakes can also be termed hypersaline lakes, and may also be pink lakes on account of their colour. An alkalic salt lake that has a high content of carbonate is sometimes termed a soda lake.
Soltan lake in Iran with salt mounds
Astronaut's photo of Bakhtegan and Maharloo salt lakes near Shiraz, Iran. Salt lakes are particularly common in Iran.
Lake Elton, Russia
Mono Lake, United States