Stock Photo - Ripple marks are sedimentary structures that indicate agitation by water. This photo was taken in Riba de Santiuste, Guadalajara, Castilla-La Mancha, Spain.

Stock Photo: Ripple marks are sedimentary structures that indicate agitation by water. This photo was taken in Riba de Santiuste, Guadalajara, Castilla-La Mancha, Spain.

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