The Kawah Ljen volcano in Java has the largest acid lake in the world in its crater. From 5 a.m., in suffocating fumes, Matrusen and other miners harvest blocks of hot sulfur, without gloves, masks or overalls, while the air is full of toxic fumes that attack the throat and lungs. Once the sulfur has been harvested, the miners are not at the end of their troubles. It is now necessary to descend the volcano by a narrow and steep path to reach the factory. Every moment, loaded with their heavy baskets filled with sulfur blocks, the miners risk their lives.
