Late afternoon sunlight light and a dramatic black sky from a  approaching tropical storm is setting the mood for the Mui Ne Sand dunes. <br /> The Mui Ne sand dunes in Central Vietnam are a fascinating geological phenomenon. The dunes, once the bane of developers in the area, are constantly shifting; the small patch of desert is actually growing! The large lake situated between the dunes is actually becoming filled in by sand, meaning that the most valuable water source in the area may disappear one day altogether.
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