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1184-6886 - Salt mine of Nemocon, Colombia, South America
1184-6885 - Salt mine of Nemocon, Colombia, South America
1184-6884 - Salt mine of Nemocon, Colombia, South America
860-288817 - Reflection of trees in Tinto river, Rio Tinto minas, Rio Tinto, Huelva, Spain
![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.](https://images.robertharding.com/zoom/RM/RH/HORIZONTAL/860-288801.jpg "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.<br />860-288801")
860-288801 - 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.
![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.](https://images.robertharding.com/zoom/RM/RH/HORIZONTAL/860-288798.jpg "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.<br />860-288798")
860-288798 - 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.
![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.](https://images.robertharding.com/zoom/RM/RH/HORIZONTAL/860-288800.jpg "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.<br />860-288800")
860-288800 - 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.](https://images.robertharding.com/zoom/RM/RH/VERTICAL/860-288799.jpg "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.<br />860-288799")
860-288799 - 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.
1265-126 - Salina Turda, underground salt mine tourist attraction in Turda city, Romania, Europe
1265-123 - Salina Turda, underground salt mine tourist attraction in Turda city, Romania, Europe
1265-125 - Salina Turda, underground salt mine tourist attraction in Turda city, Romania, Europe
1265-124 - Salina Turda, underground salt mine tourist attraction in Turda city, Romania, Europe
860-287144 - Old ocher extraction gallery, Luberon Regional Nature Park, Vaucluse, France
860-287143 - Old ocher extraction gallery, Luberon Regional Nature Park, Vaucluse, France
832-383362 - Salt mine, Pride, Sovata, Mures County, Romania, Europe
1245-1448 - Salt Cathedral, interior, Zipaquira, Cundinamarca Department, Colombia, South America
1245-1438 - Salt Cathedral, interior, Zipaquira, Cundinamarca Department, Colombia, South America
1245-1447 - Salt Cathedral, interior, Zipaquira, Cundinamarca Department, Colombia, South America
1245-1449 - Salt Cathedral, interior, Zipaquira, Cundinamarca Department, Colombia, South America
1278-196 - Wieliczka Salt Mine Tourist Route, Chapel of St. Kinga with carved details in Kopalnia soli Wieliczka, UNESCO World Heritage Site, Krakow, Poland, Europe
1278-195 - Wieliczka Salt Mine Tourist Route, Chapel of St. Kinga with chandeliers in Kopalnia soli Wieliczka, UNESCO World Heritage Site, Krakow, Poland, Europe
1278-194 - Wieliczka Salt Mine Tourist Route, Chapel of St. Kinga staircase in Kopalnia soli Wieliczka, UNESCO World Heritage Site, Krakow, Poland, Europe
1184-1585 - Mine shaft behind the Great Laxey Wheel, Isle of Man, crown dependency of the United Kingdom, Europe
1265-28 - Rudolf Mine in Salina Turda salt mine in Turda city, Romania, Europe
1265-30 - Underground lake in the Salt Mine, Salina Turda museum in Transylvania, Romania, Europe
1265-27 - Rudolf Mine in Salina Turda salt mine in Turda city, Romania, Europe
1265-29 - Salina Turda, underground salt mine tourist attraction in Turda city, Romania, Europe
733-6706 - LKAB mining tour, largest underground iron ore mine in the world, Kiruna, Lapland, Arctic Circle, Sweden, Scandinavia, Europe
733-6707 - LKAB mining tour, largest underground iron ore mine in the world, Kiruna, Lapland, Arctic Circle, Sweden, Scandinavia, Europe
733-6708 - LKAB mining tour, largest underground iron ore mine in the world, Kiruna, Lapland, Arctic Circle, Sweden, Scandinavia, Europe
733-6709 - LKAB mining tour, largest underground iron ore mine in the world, Kiruna, Lapland, Arctic Circle, Sweden, Scandinavia, Europe
817-462440 - salt-mine, Pride, Sovata, Romania, Europe.
817-462439 - salt-mine, Pride, Sovata, Romania, Europe.
733-6090 - Tourist route, Wieliczka Salt Mine, UNESCO World Heritage Site, Krakow, Malopolska, Poland, Europe
733-6091 - Tourist route, Chapel of St. Kinga, Wieliczka Salt Mine, UNESCO World Heritage Site, Krakow, Malopolska, Poland, Europe
733-6093 - Miners route, Wieliczka Salt Mine, UNESCO World Heritage Site, Krakow, Malopolska, Poland, Europe
733-6092 - Tourist route, Chapel of St. Kinga, Wieliczka Salt Mine, UNESCO World Heritage Site, Krakow, Malopolska, Poland, Europe
733-6094 - Miners route, Wieliczka Salt Mine, UNESCO World Heritage Site, Krakow, Malopolska, Poland, Europe
817-439147 - D-Herten, Ruhr area, Westphalia, North Rhine-Westphalia, hard coal mining, coal-pit Ewald 1/2/7, shaft 7, shaft building, shaft house, pit tower, Route of Industrial Heritage, evening, snow.
817-438691 - salt-mine, Pride, Sovata, Romania, Europe
832-140587 - Hallstatt Salt Mine, Empress Christina Stollen gallery, Salzkammergut, Upper Austria, Europe
832-57718 - Rock salt mined from an underground mine is piled up at the Detroit Salt Company, the salt is used mainly for high de-icing, Detroit, Michigan, USA
832-45138 - Inside Daugbjerg limestone mines near Viborg, Jutland, Denmark, Europe
1113-61248 - Underground mine of the family Bevan in Lightning Ridge, near the Queensland border, opal settlement, New South Wales, Australia
857-17421 - Miners inside a coal mine near Durango, Colorado
857-17420 - A miner inside a coal mine near Durango, Colorado
857-13145 - Hardrock miners working in the Sunnyside Mine, a large underground gold mine near Silverton, Colorado. The mine is now closed.
857-17418 - A miner inside a coal mine near Durango, Colorado
1031-22 - The mine uses the most sophisticated modern mining techniques to bring grit salt to the surface, including a laser guided JOY excavator and mechanical drills and lift.
1031-14 - Mining grit salt is very different to the traditional image of cramped dark areas and men with pickaxes! The nature of grit salt mines mean they resemble vast caverns, up to 20 metres wide. .
1031-34 - Mining grit salt is very different to the traditional image of cramped dark areas and men with pickaxes! The nature of grit salt mines mean they resemble vast caverns, up to 20 metres wide.
1031-15 - Mining grit salt is very different to the traditional image of cramped dark areas and men with pickaxes! The nature of grit salt mines mean they resemble vast caverns, up to 20 metres wide. .
1031-26 - The mine uses the most sophisticated modern mining techniques to bring grit salt to the surface, including a laser guided JOY excavator and mechanical drills and lift.
1031-31 - Mining grit salt is very different to the traditional image of cramped dark areas and men with pickaxes! The nature of grit salt mines mean they resemble vast caverns, up to 20 metres wide.
1031-18 - Mining grit salt is very different to the traditional image of cramped dark areas and men with pickaxes! The nature of grit salt mines mean they resemble vast caverns, up to 20 metres wide. .
1031-29 - Mining grit salt is very different to the traditional image of cramped dark areas and men with pickaxes! The nature of grit salt mines mean they resemble vast caverns, up to 20 metres wide.
1031-30 - Mining grit salt is very different to the traditional image of cramped dark areas and men with pickaxes! The nature of grit salt mines mean they resemble vast caverns, up to 20 metres wide.
1031-28 - Mining grit salt is very different to the traditional image of cramped dark areas and men with pickaxes! The nature of grit salt mines mean they resemble vast caverns, up to 20 metres wide.
1031-39 - Mining grit salt is very different to the traditional image of cramped dark areas and men with pickaxes! The nature of grit salt mines mean they resemble vast caverns, up to 20 metres wide.
1031-17 - Mining grit salt is very different to the traditional image of cramped dark areas and men with pickaxes! The nature of grit salt mines mean they resemble vast caverns, up to 20 metres wide. .
1031-33 - Mining grit salt is very different to the traditional image of cramped dark areas and men with pickaxes! The nature of grit salt mines mean they resemble vast caverns, up to 20 metres wide.
1031-24 - The mine uses the most sophisticated modern mining techniques to bring grit salt to the surface, including a laser guided JOY excavator and mechanical drills and lift.
1031-25 - The mine uses the most sophisticated modern mining techniques to bring grit salt to the surface, including a laser guided JOY excavator and mechanical drills and lift.
1031-21 - The mine uses the most sophisticated modern mining techniques to bring grit salt to the surface, including a laser guided JOY excavator and mechanical drills and lift.
1031-16 - Mining grit salt is very different to the traditional image of cramped dark areas and men with pickaxes! The nature of grit salt mines mean they resemble vast caverns, up to 20 metres wide. .
1031-35 - Mining grit salt is very different to the traditional image of cramped dark areas and men with pickaxes! The nature of grit salt mines mean they resemble vast caverns, up to 20 metres wide.
1031-27 - The mine uses the most sophisticated modern mining techniques to bring grit salt to the surface, including a laser guided JOY excavator and mechanical drills and lift.
1031-23 - The mine uses the most sophisticated modern mining techniques to bring grit salt to the surface, including a laser guided JOY excavator and mechanical drills and lift.
1031-36 - Mining grit salt is very different to the traditional image of cramped dark areas and men with pickaxes! The nature of grit salt mines mean they resemble vast caverns, up to 20 metres wide.
1031-38 - Mining grit salt is very different to the traditional image of cramped dark areas and men with pickaxes! The nature of grit salt mines mean they resemble vast caverns, up to 20 metres wide.
1031-37 - Mining grit salt is very different to the traditional image of cramped dark areas and men with pickaxes! The nature of grit salt mines mean they resemble vast caverns, up to 20 metres wide.
1031-19 - Mining grit salt is very different to the traditional image of cramped dark areas and men with pickaxes! The nature of grit salt mines mean they resemble vast caverns, up to 20 metres wide. .
1031-20 - The mine uses the most sophisticated modern mining techniques to bring grit salt to the surface, including a laser guided JOY excavator and mechanical drills and lift.
1031-32 - Mining grit salt is very different to the traditional image of cramped dark areas and men with pickaxes! The nature of grit salt mines mean they resemble vast caverns, up to 20 metres wide.
817-327351 - Wieliczka Salt Mine Unesco, Poland, Europe
817-327353 - Wieliczka Salt Mine Unesco, Poland, Europe
815-1217 - Interior, Neolithic flint mine, Grimes Graves, Norfolk, England, United Kingdom, Europe
815-1216 - Greenwell's shaft, Neolithic flint mine, Grimes Graves, Norfolk, England, United Kingdom, Europe
817-234668 - Wieliczka Salt Mine, Poland Unique in the world it has been listed by UNESCO as a World Heritage Site Place of sanatorium for resiratory and rheumatic diseases some 200 m below the serface
817-236155 - Poland, Wieliczka Salt Mine, World Heritage Site, UNESCO, place of sanatorium for respiratory and rheumatic diseases
817-236156 - Poland, Wieliczka Salt Mine, World Heritage Site, UNESCO
829-823 - Re-created diamond mining tunnels at the Kimberley Open Mine Museum in Kimberley in South Africa's North-West Province.
29-4717 - Mine in Cerro Rico, richest hill on earth, hand mining of silver and zinc today, Potosi, Bolivia, South America
142-5812 - Visit to Gold Mine Reef, Gold Reef City, Johannesburg, South Africa, Africa
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