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Micro
tail dunes at Jebel Bahari ( جبل بحرى
) - Sand shadow versus sunlight shadow. Both caused by stones working
as obstructions. The dark part to the right of a stone is a light shadow
produced by the setting sun low on the horizon while the bright part to
the left of a stone is a tiny tail dune produced by wind which decreases
behind an obstruction and lets sand grains rest there. |
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