dunes sand dunes

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Waves in the sand and in the sky, White Sands National park, New Mexico

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Panorama around the sand sheet (erg Chebbi) near Merzouga, eastern Morocco

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Overflight of an erg in the Arabian Desert - watch for a road in the second half of the clip to give it some scale. Check out how the crests of the dunes and their directions change - an indication of inconsistent wind directions across this dune field.