Dry, hot winds that whirl up and carry the desert sand are called sandstorms. They can rage for days and can carry so much of dust that nothing is visible. The sandstorm appears as a solid wall of sand that could be as high as 1.6 km. Animals and people caught in it can lose their orientation and die. Desert nomads stack sandbags around their tents and protect themselves with the help of veils over their heads and faces. Camels can close their nostrils and they have extra-long eyelashes that cover their eyes.
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