Kawah Ijen and its turquoise acid crater lake, Java, Indonesia, Southeast Asia, Asia

Kawah Ijen volcano slope (Ijen crater), Banyuwangi, East Java, Indonesia, Southeast Asia, Asia

Sulphur miners working in the crater at Kawah Ijen, Java, Indonesia, Southeast Asia, Asia

Panorama of sulphur worker appearing out of toxic fumes at Kawah Ijen volcano, East Java, Indonesia, Southeast Asia, Asia

Kawah Ijen volcano (Ijen crater and lake), Banyuwangi, East Java, Indonesia, Southeast Asia, Asia

Kawah Ijen volcano ridge (Ijen crater), Banyuwangi, East Java, Indonesia, Southeast Asia, Asia

Smoke billowing out from volcano vent, Sulphur Lake, Kawah Ijen, Ijen Plateau, island of Java, Indonesia, Southeast Asia, Asia

Tourists trekking, Sulphur Lake, Kawah Ijen, Ijen Plateau, island of Java, Indonesia, Southeast Asia, Asia

Sulphur carriers climbing out of Kawah Ijen volcano (Ijen crater), Banyuwangi, East Java, Indonesia, Southeast Asia, Asia

Sulphur carriers climbing out of Kawah Ijen volcano (Ijen crater), Banyuwangi, East Java, Indonesia, Southeast Asia, Asia

Smoke billowing out from volcano vent, Sulphur Lake, Kawah Ijen, Ijen Plateau, Java, Indonesia, Southeast Asia, Asia

Volcano Kawah Ijen, volcanic crater with crater lake and steaming vents, morning light, Banyuwangi, Sempol, Jawa Timur, Indonesia, Asia

Sulphur carrier climbing out of Kawah Ijen volcano, Ijen crater, Banyuwangi, East Java, Indonesia, Asia

Two Men Exploring Sulfur Dioxide Smoke At Kawah Ijen, Java, Indonesia

Two Male Hikers In Volcano Kawah Ijen, Java, Indonesia

Two Men Hiking In Volcano Kawah Ijen, Java, Indonesia

Kawah Ijen volcano, Banyuwangi, Java, Indonesia

Kawah Ijen volcano, Banyuwangi, Java, Indonesia