The blue flame of burning sulfur flickers near a miner on Kawah Ijen volcano in East Java. The pungent element is mined near the crater’s highly acidic lake for such industrial uses as rubber and sugar processing. PHOTO: OLIVIER GRUNEWALD
The blue flame of burning sulfur flickers near a miner on Kawah Ijen volcano in East Java. The pungent element is mined near the crater’s highly acidic lake for such industrial uses as rubber and sugar processing. PHOTO: OLIVIER GRUNEWALD
