1311-537 - The red water of Lithodendron Wash, red from bentonite clay, in Petrified Forest National Park, Arizona, United States of America, North America
1311-538 - The red water of Lithodendron Wash, red from bentonite clay, in Petrified Forest National Park, Arizona, United States of America, North America
1311-536 - The red water of Lithodendron Wash, red from bentonite clay, in Petrified Forest National Park, Arizona, United States of America, North America
832-397829 - Single pithoi, clay vessel, red rectangular column, stone wall, stone ashlar, Palace of Knossos, Heraklion, Central Crete, Island of Crete, Greece, Europe
832-395326 - Fallen leaf of a chumbo in heart shape on clay soil, heart of nature, natural heart, heart shape, symbol of love, sign of love, love symbol, proof of love, heart symbol, organ heart, kindness, affection, inflamed, in love, crush, colour red, heart emoji, Spain, Europe
1311-361 - Blood red ridges of Bentonite clay on the east side of Tiponi Point in Petrified Forest National Park, Arizona, United States of America, North America
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.
832-304274 - Four-wheel drive vehicle parked under sun shade in front of a small clay house, Licancabur Volcano in background, San Pedro de Atacama, Chile, South America