An aerial view shows the Santa Olalla lagoon, the largest permanent lagoon in the Donana wetlands of southern Spain, completely dried out for the second summer in a row amid the country's prolonged drought and the overexploitation of aquifers, the Spanish National Research Council (CSIC) said, in this picture taken August 9, 2023 and released on August 10, 2023. Carlos Ruiz-CSIC /Handout via REUTERS