In this presidential palace photo taken on July 5, 2015 and released on July 6, 2015, Indonesia's President Joko Widodo (4th L), accompanied by officials, inspects the geothermal plant run by Pertamina, the state-owned energy firm, during the inauguration of the geothermal power plant unit 5 and the groundbreaking of the geothermal project in Kamojang in West Java province. Indonesia, made up of thousands of islands stretching from the Indian to the Pacific Oceans, is home to some 130 volcanoes and is estimated to hold around 40 percent of the world's geothermal potential. AFP PHOTO / RUSMAN / PRESIDENTIAL PALACE ---EDITORS NOTE ---- RESTRICTED TO EDITORIAL USE --- MANDATORY CREDIT "AFP PHOTO / RUSMAN / PRESIDENTIAL PALACE" --- NO MARKETING - NO ADVESTISING CAMPAIGNS --DISTRIBUTED AS SERVICE TO CLIENTS / AFP PHOTO / PRESIDENTIAL PALACE / RUSMAN

April 26, 2018 5:55 PM (UTC+8)