Sulfur mining near the one-kilometer-wide turquoise-colored acidic crater lake at the Ijen volcano complex, a group of stratovolcanoes in the Banyuwangi Regency of East Java, Indonesia. During the mining process, sulfur-laden baskets are carried by hand from the crater floor. The work is paid well relative to the cost of living in the area, but very onerous.Photograph: Sémhur