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It is more for the historic interest than the photograph that I propose you this photo today! Here are the collectors of salt of the lake Retba (called pink lake), situated on almost ile of the Cape Verde close to the Sénégal's Capital: Dakar! Here is the local economy of the region the salt, with a content of 380 grams of salt by liter of water it makes one of the waters the most salted to the world. Why the pink lake? It is due to a cyanobactérie, a microscopic body which makes, especially by weather of dry wind, a red pigment to resist the concentration of salt. Regrettably this day, there was no wind...