Geology and ornithology. Layers of sand deposits, Devonian horizons. Soil structure allow Sand swallow (Riparia riparia) to dig nest holes. North-West

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Geology and ornithology. Layers of sand deposits, Devonian horizons. Soil structure allow Sand swallow (Riparia riparia) to dig nest holes. North-West Of Russia

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Size: 4589px × 3060px
Photo credit: © Maximilian Buzun / Alamy / Afripics
License: Royalty Free
Model Released: No

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