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just to be curious... (Margherita di Savoia salt pans, Italy)

© Paolo Uboldi, award-winning artwork at Apulia Land Art Festival 2017

The Margherita di Savoia Salt Pans Natural Reserve is located about 10 km north of Barletta (Apulia, Italy). It is the largest salt pan in Europe, the third in the world after the Makgadikgadi Pans (Botswana) and the Salar de Uyuni (Bolivia).

The salt pan area is 20 km long and 5 km wide, with a total surface of about 45 square km; each year 30 millions cubic meters of marine water is used for the production of about six millions quintals of salt.
The clay soil guarantees a high level of impermeability. 

The natural reserve has a great biodiversity of bird species, among which the pink flamingos, perfectly camouflaged with the salt pans (some areas are pink colored given the presence of the micro-algae  Dunaliella salina, one of the few organisms that can live in hypersaline conditions).