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Also called Lake Retba, it is exploited for its salt. Appel? aussi lac Retba, il est exploit? pour son sel. (Photo by Michel RENAUDEAU/Gamma-Rapho via Getty Images)

Also called Lake Retba, it is exploited for its salt. Appel? aussi lac Retba, il est exploit? pour son sel. (Photo by Michel RENAUDEAU/Gamma-Rapho via Getty Images)