Backlit image of workers loaded with sulphur pieces cut out from a sulphur mine on Ijen crater lake, Java, Indonesia, Southeast Asia, Asia

Sulphur worker appearing out of toxic fumes at Kawah Ijen, East Java, Indonesia, Southeast Asia, Asia

Sulphur miner working to mine sulphur at Kawah Ijen, Java, Indonesia, Southeast Asia, Asia

Sulphur worker mining sulphur at the bottom of the crater, Kawah Ijen, Java, Indonesia, Southeast Asia, Asia

Backlit, worker, sulphur, mine, Ijen, ijen volcano, volcano, crater, Java, Indonesia, Southeast Asia, Asia

Toxic sulphur fumes escaping from the ceramic pipes at Kawah Ijen, Java, Indonesia, Southeast Asia, Asia

Sulphur miner working at Kawah Ijen, Java, Indonesia, Southeast Asia, Asia

Liquid sulphur solidifying on the ground at Kawah Ijen, Java, Indonesia, Southeast Asia, Asia

Baskets of bright yellow sulphur, Kawah Ijen, Java, Indonesia, Southeast Asia, Asia

Kawah Ijen, empty sulphur baskets waiting to be filled, East Java, Indonesia, Southeast Asia, Asia

Sulphur basket, Kawah Ijen crater, Java, Indonesia, Southeast Asia, Asia

Main open-pit copper-sulphur mine at Rio Tinto, Huelva, Southwest Spain, Europe

Sulphur miner of Ijen volcano, Eastern Java, Indonesia, Southeast Asia, Asia

Sulphur miner of Ijen volcano, Eastern Java, Indonesia, Southeast Asia, Asia

Workers in the sulphur mine of the Ijen Volcano, Java, Indonesia, Southeast Asia, Asia

Worker carrying big pieces of sulphur out of the Ijen Volcano, Java, Indonesia, Southeast Asia, Asia

The Utah Smelter (1995) that services the nearby massive Bingham Canyon Copper Mine, The plant refines 99.9% pure copper & claims 99.9% removal of sulphur dioxide emissions, Great Salt Lake, Utah, United States of Americ (USA), North America

The Utah Smelter (1995) that services the nearby massive Bingham Canyon Copper Mine, The plant refines 99.9% pure copper & claims 99.9% removal of sulphur dioxide emissions, Great Salt Lake, Utah, United States of America (USA), North America

Lake in the crater of the Kawa Ijan volcano where a sulphur mine constantly smokes, Baluran National Park, Java, Indonesia, Southeast Asia, Asia

View of the crater of the constantly smoking Kawa Ijan volcano, site of a sulphur mine, Baluran National Park, Java, Indonesia, Southeast Asia, Asia

Workers carrying heavy baskets of sulphur, by the crater lake of the Kawa Ijan volcano where a sulphur mine constantly smokes, Baluran National Park, Java, Indonesia, Southeast Asia, Asia

Worker carrying heavy baskets of sulphur, by the crater lake of the Kawa Ijan volcano, where a sulphur mine constantly smokes, Baluran National Park, Java, Indonesia, Southeast Asia, Asia

Lake in the crater of the Kawa Ijan volcano where a sulphur mine constantly smokes, Baluran National Park, Java, Indonesia, Southeast Asia, Asia

Worker carrying heavy baskets of sulphur, by the crater lake of the Kawa Ijan volcano where a sulphur mine constantly smokes, Baluran National Park, Java, Indonesia, Southeast Asia, Asia

Worker carrying heavy baskets of sulphur, by the crater lake of the Kawa Ijan volcano where a sulphur mine constantly smokes, Baluran National Park, Java, Indonesia, Southeast Asia, Asia

View of the crater of the constantly smoking Kawa Ijan volcano, site of a sulphur mine, Baluran National Park, Java, Indonesia, Southeast Asia, Asia

Crater lake of Kawah Ijen, Kawah Ijen, Jawa Timur, Java, Indonesia, Asia

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

Herbivorous,

Two Male Hikers In Volcano Kawah Ijen, Java, Indonesia

Two Men Hiking In Volcano Kawah Ijen, Java, Indonesia

R?o Tinto, Andalucia, Spain *** Local Caption *** R?o Tinto ("Red River") is very acidic (Ph 2) and has a deep reddish hue due to iron dissolved in water. The acidity of the watercourse is linked to the drainage of pyrite, which is very present in the subsoil. Extremophilic and endemic bacteria and algae colonize the river bed, forming a fragile biofilm that evokes the hot springs of Yellowstone Park in the USA.

R?o Tinto, Andalucia, Spain *** Local Caption *** R?o Tinto ("Red River") is very acidic (Ph 2) and has a deep reddish hue due to iron dissolved in water. The acidity of the watercourse is linked to the drainage of pyrite, which is very present in the subsoil. Extremophilic and endemic bacteria and algae colonize the river bed, forming a fragile biofilm that evokes the hot springs of Yellowstone Park in the USA.

Reflections on Rio Tinto, near its source, Andalusia, Spain *** Local Caption *** R?o Tinto ("Red River") is very acidic (Ph 2) and has a deep reddish hue due to iron dissolved in water. The acidity of the watercourse is linked to the drainage of pyrite, which is very present in the subsoil. Extremophilic and endemic bacteria and algae colonize the river bed, forming a fragile biofilm that evokes the hot springs of Yellowstone Park in the USA.

Clay loaded with iron oxides and dried out, Rio Tinto, Andalusia, Spain *** Local Caption *** R?o Tinto ("Red River") is very acidic (Ph 2) and has a deep reddish hue due to iron dissolved in water. The acidity of the watercourse is linked to the drainage of pyrite, which is very present in the subsoil. Extremophilic and endemic bacteria and algae colonize the river bed, forming a fragile biofilm that evokes the hot springs of Yellowstone Park in the USA.