A picture taken on December 17, 2016 shows the Gibe III dam in the Omo Valley. Ethiopia today inaugurated a hydroelectric dam that aims to double the country's electricity output, but which critics say is a threat to locals and a UNESCO-listed lake in Kenya. The Gibe III dam, which reaches 243 metres (800 feet) in height, is the third-largest dam in Africa and the biggest in a series built along the Omo River. / AFP / - (Photo credit should read -/AFP/Getty Images)
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