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.
860-288859 - African savannah elephant (Loxodonta africana africana) sprinkling sand after crossing the Luangwa River at dawn, South Luangwa NP, Zambia
860-288781 - Le Glacier Blanc (3023m), view on Mount Pelvoux (3932m), Valley of Vallouise, Brian?onnais region, Ecrins National Park, Hautes-Alpes, France
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.
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.
860-288699 - Landscape of tropical karstic phenomena in the Tsingy national park of Bemaraha, Small Tsingy area, UNESCO World Heritage site, Early November: end of dry season, Madagascar
860-288696 - Landscape of tropical karstic phenomena in the Tsingy national park of Bemaraha, Small Tsingy area, UNESCO World Heritage site, Early November: end of dry season, Madagascar
860-288157 - Cliff with remarkable stratifications, folded layers of marls and limestones of the Lower Jurassic, above Bassey near Bourg d'Oisan, Ecrins NP, Alps, France
860-288697 - Landscape of tropical karstic phenomena in the Tsingy national park of Bemaraha, Small Tsingy area, UNESCO World Heritage site, Early November: end of dry season, Madagascar
860-288701 - Landscape of tropical karstic phenomena in the Tsingy national park of Bemaraha, Small Tsingy area, UNESCO World Heritage site, Early November: end of dry season, Madagascar
860-288698 - Landscape of tropical karstic phenomena in the Tsingy national park of Bemaraha, Small Tsingy area, UNESCO World Heritage site, Early November: end of dry season, Madagascar
860-288700 - Landscape of tropical karstic phenomena in the Tsingy national park of Bemaraha, Small Tsingy area, UNESCO World Heritage site, Early November: end of dry season, Madagascar
860-288156 - Cliff with remarkable stratifications, folded layers of marls and limestones of the Lower Jurassic, above Bassey near Bourg d'Oisan, Ecrins NP, Alps, France
860-287633 - Hiker on the Tours du Lac, Lake Allos (2226 m) and in the background Mont Pelat (3051m), Haut-Verdon, Mercantour National Park, Alps, France
860-287535 - Concretions in the caves of Choranche, cave remarkably rich in fistuleuses, fine stalagmites that can reach several meters long, Massif du Vercors, Isere, France
860-287490 - Lion (Panthera leo) lioness with her prey, a Thomson's gazelle (Eudorcas thomsonii), Ngorongoro Conservation Area, Serengeti, Tanzania
860-287536 - Concretions in the caves of Choranche, cave remarkably rich in fistuleuses, fine stalagmites that can reach several meters long, Massif du Vercors, Isere, France
860-287300 - Mongolians horsemen, lead a troop of horses running in a group in the meadow, Bashang Grassland, Zhangjiakou, Hebei Province, Inner Mongolia, China
860-287299 - Mongolians horsemen, lead a troop of horses running in a group in the meadow, Bashang Grassland, Zhangjiakou, Hebei Province, Inner Mongolia, China