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Geology. Alluvium overlying the chalk - stereocsopic card
Picryl description: Public domain image of a quarry, excavation or mining site, free to use, no copyright restrictions.
The delta land of the Mississippi River is the largest alluvial sectio...
Public domain photograph of Dorothea Lange, free to use, no copyright restrictions image - Picryl description Dorothea Lange was an American documentary photographer and photojournalist, widely recognized for ... More
Alluvium Goldwashing
Deutsch: Goldwäscher auf Sand-/Kiesbank am Rio Napo, Ecuador, östlich von Tena