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Stones

Soil scientists in action: Arturo (Univ. of Seville) describing a Regosol Antonio Jordán

Hillside of thin reddish soil strewn with loose grey limestone fragments and piled into stone heaps, among dry grass, shrubs and palm-like bushes under a clear blue sky. — Rock fragments on the surface of a eroded soil Antonio Jordán

Waterfront in a stony soil after rainfall simulation Antonio Jordán

Dirt track of red-brown soil with two deep wheel ruts filled with pale stones and rock fragments, a small muddy puddle at the bottom and green shrubs ahead. — Family reunion of stones Antonio Jordán

Large orange-brown boulder resting at an angle on a sloping grey granite surface, under a leafy green tree and a clear blue sky. — Sun heating up in Matobos Rosana Kral

Rounded boulders with green algae and smooth pebbles at the edge of a misty, glassy sea blurred by a long exposure, under a pale sky. — Still life or active planet? Jennifer Ziesch

Pale sandy ground strewn with many angular pale rock fragments of different sizes, with a single sparse tuft of thin grass stems in the middle. — Rock fragments on a sandy soil Antonio Jordán

Ground covered almost entirely by flat reddish brown slate and schist fragments, with rounded green shrubs dotted across it under a cloudy sky. — Stony soil: Lithic Leptosol Antonio Jordán

Close view of ground littered with flat angular reddish brown rock fragments, with green shrubs and a few slender bare trees behind under a blue sky with clouds. — Stony soil Antonio Jordán

Close-up of reddish brown soil packed with rounded pebbles in cream, yellow and brown, crossed by grey tree roots. — Layer of pebbles in a Gleyic Regosol Antonio Jordán

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