The Kawah Ijen is an active volcano set in the scenic landscape of East Java, Indonesia; hosting one of the largest highly acidic lakes in the world.
Every day hundreds of workers venture into the crater with minimal protection, like a mere scarf, to protect against the poisonous gases. These people are putting their lives at risk to mine sulfur. The stones of the caldera are on fire, emiting toxic gases, the sulfur melting, leaking down and becoming solid again. The miners work with bare hands, using an iron rod to remove the sulfur from the surface. Then they have to face a treacherous climb out of the crater and over the mountains to offload the sulfur at the station, 4km away. All this with as much as 75kg laid across their shoulders in wicker baskets. One person can make this journey only twice a day.