Maharloo Lake , also known as Daryache-ye-Namak is a seasonal salt lake in the highlands of Shiraz. 27.0 km southeast of Shiraz, the lake salt is rich in potassium and other salts.
Rudkhane-ye-Khoshk, a seasonal river flowing through the city of Shiraz, brings most of the flood water to the lake bed during intensive precipitation events. The lake water typically evaporates by the end of summer and exposes the white lake bed. By mid-summer and due to high evaporation rates and salt concentrations, the lake water turns pinkish red as a result of the red tide within the lake.
The pink color is due to the presence of algae that produces carotenoids (organic pigments), such as Dunaliella salina - a type of halophile green micro-algae especially found in sea salt fields.