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After the closure, ten years ago, of the Gramacho landfill, one of the largest in Latin America, the area has suffered an extraordinary metamorphosis, gradually evolving into a bay dominated by nature:a mangrove forest which is home to crabs, snails, fish and birds. The Gramacho landfill, opened in 1968 near the Guanabara Bay (Brazil), over time has transformed that earthly paradise, characterized by immaculate beaches and artisanal fishing, in a heavily polluted swamp.In just twenty years, approximately 80 million tons of waste were disposed of in the area, causing serious pollution of the bay and surrounding rivers.In 1996, the city began taking steps to reclaim the swamp, starting the leachate treatment, a toxic byproduct derived from the decomposition of waste.However, the garbage continued to accumulate until 2012, when it finally hit the landfill it was closed. From that moment on the residents and workers of Comlurb, the largest public waste disposal organization in Latin Americ...